Document wDy8VY4Y7ZN20NQMNvae190j6

APPENDIX D METHODS FOR CONTROLLING RESPIRABLE COAL MINE DUST FROM OVERBURDEN DRILLING AT SURFACE COAL MINES This appendix focuses on methods of reducing excess respirable dust exposures during overburden drilling, the activity that places surface coal miners at the greatest risk of exposure to respirable crystalline silica. D.1 ENGINEERING CONTROLS Engineering controls for overburden drilling include dry dust collection systems, wet dust suppres sion systems, and enclosed cabs [Zimmer and Lueck 1986; Volkwein et al. 1979]. Proper maintenance of the dust suppression system is critically important for drills using dry dust suppression methods. Failure to rigorously maintain these systems will result in inadequate dust control. Acute silicosis has been reported in miners operating equipment that relies on dry dust suppression [NIOSH 1992]. D.1.1 Dry Dust Collection Systems Dry dust collection systems typically include a drill platform shroud, a drill stem seal, and a dust collector. D. 1.1.1 Drill Platform Shroud A drill platform shroud is essentially a skirt made of a flexible material (usually rubber) that hangs from the underside of the drill platform and surrounds the drill hole. The shroud enclosure, which is maintained under negative pressure, contains the dust that comes out of the drill hole. When the system is equipped with an adjustable shroud, the shroud height (the distance between the ground and the bottom of the shroud) should be kept as low as possible. A BOM [Zimmer and Lueck 1986] study found that although results differ with various drills, the control efficiency generally decreases as the shroud height increases. The same study reported that for the two drills tested, control efficiencies varied from 99% to 41% over the 0- to 27-in. height range and the collection system performed most efficiently when the shroud height was no greater than 9 in. In practice, however, maintaining a consistent height around the shroud because of uneven ground surfaces is not always possible. 278 Appendix D D.1.1.2 Drill Stem Seal The point at which the drill stem passes through the drill platform can be a source of dust emission. To control this dust source, a flexible collar that acts like a seal is placed around the drill stem at the platform level. The integrity of the seal must be maintained to prevent dust leakage. D.1.1.3 Dust Collector The dust from the shroud enclosure is transported through a duct to a collection chamber containing paper or fabric filters. An exhaust fan located on the clean side of the filters maintains a negative pressure inside the duct and the shroud enclosure and draws the dust-laden air through the filters at rates greater than 4 to 6 times the bailing airflow and varying from 600 to 6,000 cfm, depending on the size of the system. The filtered air is exhausted to the atmosphere and the dust is trapped on the filters. The filters are periodically cleaned with a reverse pulse of compressed air, which sends the collected dust into a hopper for discharge onto the ground away from the drill crew. Test data have shown that dry dust collection systems are capable of achieving greater than 95% control efficiency [Zimmer and Lueck 1986], but this control efficiency may not always be reproducible in practice. Table D-l summarizes the advantages and disadvantages of dry dust collection systems. D.1.2 Wet Dust Suppression Systems In wet dust suppression systems, water is pumped from a storage tank into a line injecting the bail air into the interior of the drill stem. The water droplets in the bail air coat and aggregate the dust as they are carried upward through the drill hole. Thus, the dust is suppressed by the weight of the moisture as the air bails out the cuttings from the hole. Because the water is expended in the process, the storage tank may have to be refilled one or more times per day. Normally, the water has to be transported to the drilling site. The effectiveness of the control also depends on the experience and skill of the driller, who controls the flow rate manually with a control valve. The driller often must adjust the flow rate based on his visual estimation of the moisture content of the cuttings. Excessive water in the bail air would make the cuttings too heavy to be bailed up the drill hole. Also, cuttings with excessive moisture would plug up the air orifices of the drill bit. The flow-efficiency relationship may have to be determined more than once in a particular mine because it is affected by different drills, different bit sizes, or different types of geologic strata. A flowmeter should be installed at the control valve to aid this determination [Zimmer and Lueck 1986]. In one study [Zimmer and Lueck 1986], for example, control efficiencies for a selected drill varied from 9 % at a water flow rate of 0.2 gallon per minute (gpm) to 96 % at 1.2 gpm; the greatest increase in control efficiency was in the range of 0.4 to 0.6 gpm. These figures are valid only for the conditions under which the tests were conducted. 279 Coal Mine Dust Table D-l. Advantages and disadvantages of dry dust collection systems* Advantages Operate at any outside temperature Do not require any expendable material (water) Function well when properly maintained and operated *Adapted from Zimmer and Lueck [1986]. Disadvantages Expensive to install Expensive to maintain Require conscious effort by driller to ensure efficiency May not be suitable where ground water or coal-bed fires are present Bit life can be shortened by 50% or more because of the degrading effects of excessive moisture on the bit [BOM 1988]. When outdoor temperatures drop below the freezing point, the system must be heated to alleviate operational problems. Antifreeze compounds may be added to the water to prevent freezing, but this method could be extremely expensive when large volumes of water are used. The control efficiency of wet dust suppression is similar to that of dry dust collection [Zimmer and Lueck 1986]. Table D-2 summarizes the advantages and disadvantages of wet dust suppression systems. Figure D-1 illustrates a wet dust suppression system. D.1.3 Enclosed Cab Drills come in different sizes. Depending on the size, the drills may or may not be equipped with cabs, and the cabs may be partially or totally enclosed. When a totally enclosed cab is available, an effective way to protect the driller working inside the cab is to pressurize it (positive pressure relative to the outside) with outside air drawn through an air filter capable of removing respirable dust. A NIOSH health hazard evaluation [Cornwell and Hanke 1983] reported that the use of a pressurized cab alone (without dry dust collection or wet dust suppression) could afford a respirable dust concentration that was 70% lower than that outside the cab. Subsequent information [Cornwell 1990] revealed that the air filter used for the cab was graded as 99.9% efficient in removing fine test dust as defined by the Society of Automotive Engineers [SAE 1987]. Thus, the control efficiency may be highly dependent on the grade of the air filter. Air conditioning should be installed in the cab to eliminate the need for opening the cab door or windows in hot weather. When the cab door or windows are open, even the best dust filtration system will not be effective. The air conditioning unit needs to be rugged in construction. Ordinary automotive air-conditioning units are not able to withstand the severe conditions found in the mining 280 Appendix D Table D-2. Advantages and disadvantages of wet dust suppression systems* Advantages Disadvantages Inexpensive to install Inexpensive to maintain Function well when properly operated Not affected by groundwater or bed fires *Adapted from Zimmer and Lueck [1986]. Must be heated in cold temperatures or used with antifreezing additive Require some expertise on behalf of drill operator for proper operation Require use of expendable material (water) May cause decreased bit life and drilling efficiency Rotary head Figure D-1. Wet dust suppression system. (Source: Zimmer and Lueck [1986].) 281 Coal Mine Dust environment [Volkwein et al. 1979]. Ideally, the air conditioning system should be incorporated into the engine intake system to reduce the number of maintenance items and to insure proper maintenance of both systems [Volkwein et al. 1979]. D.1.4 Improved Control Technology D.1.4.1 Dust Agglomerator In a dry dust collection system, the discharge of dust from the dust collector accounts for 40% of the respirable dust emitted [BOM 1989]. The discharged dust can be dispersed by the wind, from impact on the ground, or by equipment driven over dust piles. The dispersed dust poses a potential health hazard not only to the drill crew but also to other miners working in the vicinity. An agglomerator tested by the BOM [1989] offers a solution to these problems. The discharged dust is fed directly into a device that uses gentle water sprays and a spinning motion to coalesce the dust particles into nonrespirable pellets. D.1.4.2 Water Separation The moist environment around the drill bit in wet dust suppression has been noted to reduce drill bit life by 50% or more [BOM 1988]. Water separation is a method used to prevent water from reaching the drill bit, thereby prolonging the bit life. In this method, the bail air is guided through one or more sharp turns as it travels down the interior of the drill stem. Because it has a higher inertia than that of air, the water cannot negotiate the turns and thus is separated from the bail air. The dried bail air continues to travel through the drill stem and out of the air orifices of the bit. Under positive pressure, the water is forced out through weep holes into the annular space around the drill stem. Consequently, the drill cuttings are wetted as they are carried upward through this annulus by the bail air below. The BOM [1988] reported that no significant difference in the dust control efficiency was noted between water drilling with and without water separation and that data from one mine showed a greater than 400% increase in average bit life--9,000 ft per bit with water separation versus 1,938 ft per bit without water separation. D.2 WORK PRACTICES The selection of a suitable drilling site affects the control efficiency of a dry dust collection system. A drilling site with a flat surface should be selected because this would allow uniform shroud height around the drill. Sometimes the ground surface can be leveled with appropriate equipment. Where applicable (and coupled with proper maintenance procedures such as replacing worn parts when required), periodic and pre-operational inspections should be made on engineering controls. The following is a checklist of inspection items associated with the different control systems: Diy dust collection system -- Check the integrity of seals and shroud material. 282 Appendix D -- Check fan belts for proper tension and for wear and tear. -- Check fan blades for wear and tear. -- Check the integrity of dust collector filters. -- Check exhaust ductworks for leakage. Wet dust suppression system -- Check the control valve and the flow meter for proper operation. -- Check pipe connections for leakage. Pressurized cab -- Check the integrity of seals around the door and windows. -- Check air filters for dust accumulations. -- Check fan belts for proper tension and for wear and tear. When the drill is operating with a totally enclosed cab, the drill crew should stay inside the cab with the door and windows closed as much as practicable. When work must be done outside the cab, the drill crew members should try to position themselves upwind from dust emissions. The drill crew will drag dust with them into the cab as they enter and exit during the drilling operation. Therefore, good housekeeping is necessary to maintain a relatively dust-free environment inside the cab. Vacuuming is effective but may not be practical at the worksite. Whenever possible, wet wiping is preferred over dry sweeping. If dry sweeping is used, care should be exercised to prevent dispersing the settled dust. Cleaning with compressed air should be avoided. Where a dry dust collection system is used, the shroud must be raised periodically to let the cuttings spill out of the enclosure. The drill crew should be careful to raise the shroud only enough to clear the cuttings; at the same time, they must keep the shroud height low enough to maintain the dust capture efficiency of the system. D.3 ENGINEERING CONTROLS AND WORK PRACTICES FOR OTHER OCCUPATIONS For other surface coal miners who are potentially exposed to respirable crystalline silica and respirable coal mine dust, general industrial hygiene control methods should be applied where they are feasible and appropriate to particular operational conditions. Judicious application of engineer ing controls (e.g., local exhaust ventilation and enclosures) and work practices (e.g., equipment maintenance and housekeeping) is needed for occupations such as bulldozer operator, shotfirer, pan scraper operator, truck driver, and crusher attendant. 283 Coal Mine Dust Table D-3. Dust suppressants for controlling particulate emissions from unpaved roads* Category Description Examples Salts Surfactants Adhesives Hygroscopic compounds that extract moisture from the atmosphere and dampen the road surface Substances capable of reducing the surface tension of the transport liquid, thereby allowing available moisture to wet more dirt particles per unit volume Compounds that are mixed with native soils to form a new surface Bitumens Films Compounds derived from coal or petroleum and mixed with native soils to form a new surface Polymers that form discrete layers or membranes Adapted from Rosbury and Zimmer [1983]. Sodium silicates, calcium chloride, magnesium chloride, hydrated lime Soaps, detergents Sodium lignon sulfonate, ammonium lignon sulfonate, calcium lignon sulfonate, Portland cement Asphalt, oils Vinyls, fabrics D.4 DUST CONTROL ON UNPAVED ROADS The application of dust suppressants to unpaved roads in surface mines is generally considered useful in reducing dust emissions and improving driver safety by increasing visibility [Rosbury and Zimmer 1983], The benefits of reduced dust emissions from treated roads could extend to miners working in the vicinity, and especially to truck drivers, in the form ofreduced exposures to respirable crystalline silica and respirable coal mine dust. Table D-3 lists the various types of dust suppressants. REFERENCES CITED IN APPENDIX D BOM [1988]. Impact of drill stem water separation on dust control for surface coal mines. Washington, DC: U.S. Department of the Interior, Bureau of Mines, Technology News No. 308. BOM [1989]. Dust agglomerator for surface coal mine drills. Washington, DC: U.S. Department of the Interior, Bureau of Mines, Technology News No. 338. Cornwell R [1990]. Telephone conversation on January 17,1990, between R. Cornell, Division of Respiratory Disease Studies, and H. Chan, Division of Standards Development and Technology Transfer, National Institute for Occupational Safety and Health, Centers for Disease Control, Public Health Service, U.S. Department of Health and Human Services. 284 Appendix D Cornwell R, Hanke W [1983]. Hazard evaluation and technical assistance report: Mine Safety and Health Administration, Morgantown, WV. Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, NIOSH Report No. HETA 82-112/113/114. NIOSH [1992]. NIOSH Alert: request for assistance in preventing silicosis and deaths in rock drillers. Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 92-107. Rosbury KD, Zimmer RA [1983]. Cost-effectiveness of dust suppressants on surface coal mine haul roads. Unpublished paper presented at the 76th Annual Meeting of the Air Pollution Control Association, Atlanta, GA, June 19-24, 1983. SAE [1987]. Air cleaner test code-SAE J726 JUN87. In: SAE recommended practice. Warrendale, PA: Society of Automotive Engineers, pp. 24.45-24.59. Volkwein JC, Covelli A, Thimons ED [1979]. Dust protection afforded by enclosed cabs on surface and underground mine machinery. Washington, DC: U.S. Department of the Interior, Bureau of Mines, Technical Progress Report 109. Zimmer RA, Lueck SR [1986]. Investigation of quartz dust sources and control mechanisms on surface coal mine operations. Vol. 1. Results, analysis, and conclusions. Washington, DC: U.S. Department of the Interior, Bureau of Mines, NTIS No. PB-86-215-852. 285 APPENDIX E INTERPRETATION OF PULMONARY FUNCTION TESTS: SPIROMETRY For evaluating the results of spirometric examinations, the largest FVC, the largest FEVi, and the ratio of the largest FEVi to the largest FVC (FEVi/FVC%) from each worker's pulmonary function examination should each be compared with the lower limit of normal (LLN or 5th percentile [ATS 1991]) derived from the reference equations of Knudson et al. [1983] (Tables E-l, E-2, and E-3 for males and Tables E-4, E-5, and E-6 for females) or the most current equivalent. When previous test results for a worker are available, a physician should also determine whether any significant change in FEV i has occurred over a period of time. See Appendix G for the criteria for interpreting longitudinal changes in lung function and for a discussion of technical considerations in the use of spirometry for screening and surveillance programs. REFERENCES CITED IN APPENDIX E ATS [1991]. Lung function testing: selection of reference values and interpretative strategies. Am Rev Respir Dis 144(5):1202-1218. Knudson RJ, Lebowitz MD, Holberg CJ, Burrows B [1983]. Changes in the normal maximal expiratory flow-volume curve with growth and aging. Am Rev Respir Dis 127:725-734. 286 Appendix E Table E - l. L L N fo r FVC fo r males oo cm Os 00 Os s o so CO CM Os CM wo q Tf Tf CO wo o VO VO q CM q 00 q Tf p Os rOs CO o OS o VC -3 -3 -3 CM CM* CM CM* CM CM CM CM CM CM CM CM CM CM CM* CM CO CO 3 8 so Os CM o 00 o wo CM rCM CO q Os q wo Tf CM q 00 q s O r** VO r- CO oo Os p WO Os pH O o Tf --3 CM CM CM CM CM CM CM CM CM CM CM CM* CM CM* CM CM CO CO CO qf-H 3 8 8 CO Os WO CM q t- ? O wo VO wo CM VO 00 VO w^ r- p r00 CO os 8 8 CM 00 vc cm CM CM* CM CM CM* CM CM CM CM CM* CM* CM* CM CM* CM* CM* CO* CO* co' OS Vi OO Os wo O e-H r- CO CM Os CM VO q CqM 00 Tf Tf q O q rq CO q Os q w-l p Os 00 Os S o vO CM CM p--< cm <N CM CM CM CM CM CM CM CM CM* CM* CM CM CM* CM CO CO CO CO O Os O wo CM 00 CM Tf CO Tf VO Tf CM WO Os q WO q q rq CO p O Os VO Os CM o 00 o Tf q ^H CM. rq V) CM CM CM CM* CM CM CM CM CM CM CM* CM* CM CM CM CM CO CO co CO CO ro CO O CM VO CM CM CO 00 CO 5 WO rwo CO q Os q wo q CM p OO p Tf O) 8 8 CO Os wo CM q i/i cm oi (oi CM CM CM CM CM CM* CM CM CM* CM* CM* CM* CO co* co' CO* CO* co' fsl pH 00 Tf CM o CO VO CO CO Tf Os Tf WO wo q r^ VO Tf q o 00 VO p CM Os 00 Os wo o pH H CO os wo CM CM q i/j cm cm CM CM CM CM* CM CM CM* CM CM* CM CM CM CM CO CO CO co CO co so cm q 00 CM WO CO **"< Tf rq- CO wo Os WO VO q CM q 00 q Tf 00 8 Os CO o s wo pri CM rCM Tf q Oq IT) <N cm CM CM CM CM CM CM CM CM CM* CM* CM CM CO CO CO CO CO CO CO On o <N r-* q co CO Os CO wqo wo 00 wo 3 O q VO q CM 00 00 oo WO os O ro CO q Os q vO CM CM q 00 q 5 Tf cm cm CM CM CM* CM CM CM* CM* CM* CM CM* CM* CO co' CO co' CO* co co co' c- lo r- CO o VO CM 00 Tf O r- CO Os w^ CM CO CO Tf wo WO VO q r- 00 00 OS Os o 00 q Tf CM o q vO q CqM OqS ,Tf cm CM CM CM* CM* CM CM CM CM CM CM CM CM CO CO CO CO co co CO CO q qin Os CM WO CO Tf OO Tf WO o q VO q CM q Os q WO 00 Os rOs CO O o q VO q CM CM 00 CM. Tf q pH q CO in Tf CM CM CM* CM* CM CM CM CM CM CM* CM CM CO CO co CO CO co CO CO co co CO CO oq SO Tf CM WO 00 wo 3 q rr- co 00 OS 00 wo O) S 00 o Tf iH O q VO CM CO q Os q wo Tf ppH n n tt cm* CM CM* CM CM CM CM* CM* CM* CM* CM CO* CO CO CO CO CO co' CO* co' co* 800 CO Tf q o wo VO wo CO q Os q wo r*- oo r00 Tf Os VO o CM q 00 q wo CM CO CO co Tf Oqs vO WO CM q cm cm* CM CM CM CM CM CM CM CM co CO CO CO CO CO CO CO CO CO CO s 8 ?Os 00 VO wqo 00 00 p wo Os VO CM Os VO CO O q q q Tf q q o q q Tf p Os 00 Os WO o CO CM CM CM CM CM CO CO CO CO CO co CO co CO CO CO CO CO CO CO Tf 8h CO r- Os q VO OO CO Os ro Tf O CM rq Tf q Tf 00 Tf wo q q 00 q wo q CM p Os p VO Os CO o Os o to cm CM CM CM CO CO CO CO CO* co CO CO co' CO* CO CO CO* CO* CO Tf* Tf V) r- q Tf OO Os 00 os wo o CM 00 wo CM CM q Os q VO Tf CO q Os q VO q CO q o p p Tf Os PPH o r-* O Tf q CO <N CM CM CM co CO CO CO co CO CO co co CO CO CO CO CO Tf Tf Tf )S 3 sCO cm 00 Os OO Os CO o o VO CO CM O q rq qq 00 wo qqp CM Os p CO cm CM CM* CO CO CO CO co co CO co CO CO co CO CO CO CO Tf Tf Tf q q qCO r~- Tf 00 oo Os o o CM 00 CM wo q CM Tf Os Tf wo q CM Os VO q CO p o Os rOs CO o o r*- Tf cm cm CO CO CO* CO CO co* CO* co' CO CO CO co* CO* CO CO Tf Tf Tf Tf qqcm Os VO CM Os VO CO O r- CO o Os Os o CM q Tf q Tf q p 00 p wo Os p 00 o wo H CM q Oqs N CM CM CO CO CO CO CO CO CO co co CO CO CO CO CO Tf Tf Tf Tf Tf q 8t> N r~Os 3 o r-* Tf CM q oo q wo Tf n 00 q wo CM q Os q VO p CO Os Os Os CO o r- Tf CM CM q CM CO CO CO CO co co CO CO CO CO CO CO CO CO CO Tf* Tf* Tf Tf Tf* 23 25 CM O 00 o wo CM CM Os CM VqO CO q Os Tf so wo CO q oq r- q Tf p o Os rOs s q 00 q wo CM CM q 00 q CO CO CO CO CO co CO CO CO CO* CO co* co' co' CO* Tf Tf* Tf Tf Tf* Tf qwo q Os <N Tf CO Os CO Tf q 00 q CO wo 00 wo CM q r- CM q r- q p VO p OS wo Os 8 WO o o q Tf q Os q co CO CO CO co co co CO CO CO CO CO CO CO CO CO Tf Tf* Tf Tf* Tf q 8CO 00 CM CM rC-M- CqM r --* q VO Tf q wo q wo q Os q Tf q Os q Tf p OO p CO Os 00 Os 8 q o N CO CO CO CO CO CO CO CO CO co CO CO CO CO CO CO CO CO CO Tf* Tf Os VC oo wo O CM wo CM ON CM Tf q Os q 5 00 Tf CO q 00 q CM q rq- CM q q p VO p Os wo Os CO* CO CO* CO* co* CO* CO* CO co* CO* CO CO co* co' CO* CO* co CO* CO* CO* CO* q % q qh Os 00 Tf Os Os Os s 00 o CO -* 00 CM CM. r- CM q VO q Tf VO Tf q wo q wo Os Tf Os Tf qqp CM cm CM CO CO CO CO CO CO co co CO CO co co CO CO CO co co CO ? r- 00 Os o CM CO Tf wo VO r- 00 OS O CM CO Tf wo VO r** & in wo wo 2 SO VO VO VO VO VO VO VO VO r- r- r- r- r- r- r- .3 a a 287 Table E - l (Continued). L L N fo r FVC fo r males Coal Mine Dust 288 wo 3 CO 3 cs 8 fH Tf (cm ) 21 23 25 27 29 33 35 37 39 43 45 47 49 51 53 55 57 59 61 Ocs co a WwOo V0O0 q CO CO CO s* Ocsn co so Tf co S' 8 00 8 8 wcso co CO S' S' S' *4 00 8 VO o CO VO CO s wo 178 3.88 4.24 4.45 4.31 4.26 4.21 3.68 3.64 3.59 3.55 3.42 3.37 3.33 00 t}; VO CO 8 VtoO CO CO to CO CO* CO 179 3.93 4.05 4.17 4.28 4.52 4.47 4.42 4.38 4.33 4.28 4.23 3.74 3.70 3.65 3.61 3.57 3.52 3.44 3.39 3.35 3.30 3.26 3.22 Os vwoo tOon o00 00 3.98 4.09 4.21 4.33 4.44 4.40 4.35 3.80 3.76 3.72 3.67 3.63 3.58 3.41 3.37 3.32 3.28 8 00 o00 88 CO CO o CO 00 CO 0q0 CO s 60S Sr*O^ 0000 CO CO O s WO 1"^ s1 Nt s' 00 S' S' s* o ccss wqo S' s* s Oqn CO S' s1 s' CO s: S' S' r00- WO o VO S; S'. On VO CS S CO S' S' S' CS 00 Tf Tfr Tf O wo On CO Tt S' 5? owo OwNo S' 3 00 o CO O00 00 S' s w00o s1 S S' S' S' wo wo wo wo VO s-' S' S1 S' S" s- tcos# CO S' 2 On Tf Tf 4.02 4.38 4.66 4.61 4.37 4.32 3.82 3.73 3.69 3.65 3.52 3.47 3.43 3.38 3.34 182 4.07 4.42 4.73 4.68 4.63 4.58 4.53 3.93 3.88 3.84 3.75 3.71 3.66 3.62 3.58 3.53 3.49 3.45 3.40 wo H 00 s S' s S ON q s- WO 183 4.12 4.24 4.35 4.47 4.60 4.55 3.99 3.95 3.90 3.86 3.77 3.73 3.68 3.64 3.51 3.46 s 0S0' 4.17 4.28 cwso s: 4.86 4.77 4.72 4.67 4.62 4.57 4.52 4.05 4.01 3.96 3.92 3.88 3.83 3.79 3.74 3.61 3.57 3.53 S' q 00 S'' S' S' S' On q 0000 185 4.21 4.33 4.45 4.57 4.93 4.84 4.69 4.11 4.07 4.03 3.98 3.94 3.89 3.85 3.76 3.72 3.68 3.63 3.59 V0O0 8 S' 8 VoOo 00 CO S' 4.26 4.50 4.61 wo ON 4.76 4.71 4.66 4.17 4.13 4.09 3.96 3.91 3.87 3.83 3.74 3.69 3.65 C0O0 8 S' S'' 0000 187 4.31 4.42 4.54 4.66 5.07 5.02 4.97 4.92 4.73 4.24 4.11 3.97 3.93 3.89 3.84 3.80 3.71 a 0000 4.35 4.47 4.59 4.71 5.14 5.04 4.99 4.21 4.17 4.12 4.08 4.04 3.99 3.95 3.91 3.82 3.77 cs ON Ocsn 00 o wo 5 owo S' s 00 S'. ocs. VcOs S' cSs' cs S; wwoo 8Bs wo wo WO wo cs ON o cSs wo wo 00 q wo wo VqO wo 00 S' wo cs VO W0 q s- s1 oS S', WO SS ON OO 4.64 4.75 5.21 5.16 5.11 5.06 5.01 4.96 4.36 4.32 4.27 4.23 4.19 4.14 4.01 3.97 3.92 3.84 8 4.45 4.57 4.68 4.80 5.27 5.23 5.13 5.03 4.98 4.94 4.42 4.38 4.34 4.20 4.16 4.12 4.07 4.03 3.99 3.94 3.90 WooO a S' s' 191 4.49 4.61 4.73 5.34 5.29 5.25 5.20 5.15 4.35 4.31 4.27 4.13 4.00 3.96 00 q S' S' 192 4.90 5.41 5.27 5.22 5.17 4.37 4.33 4.28 4.11 CS o CO 0s0. so cOsN wo c0s0 193 4.59 4.71 5.43 5.38 5.33 4.56 4.52 4.43 4.17 4.13 s 0o0 S' ro S' 19 IS I Appendix E Table E -2. L L N fo r F E V i fo r males 58 3 3 3 c0o0 cs CO CS CS On CsoS sco CS CS (cm) 17 21 25 27 29 31 33 35 37 39 41 45 47 49 53 55 57 59 191 0000 8 ri CS CS s cs o cs CS CS* cs* cs ocs CwSo oCO VCOO S; $ CwSo cs* CS* CS CS CS cs cs wCSo CS CS CS CS cs OCSn CS 157 2.52 2.52 2.48 2.43 2.38 2.34 1.97 1.92 1.83 1.79 1.74 1.70 1.65 1.56 T9I 991 61 svz 0000 P4 991 081 681 861 T00t 861 ZYZ LYZ wooo 181 981 061 661 LYZ 0o0 981 161 6 9 Z c0s0 961 LZZ 961 0YZ ooe 96Z 98Z LLZ o8 ZVZ L9Z s cs LLZ cs CS CS cs cs 8 VO LYZ LLZ cpsM cs VO CcsS ZLZ ccss rcscs* cs' VcOs CO VCOO ZLZ cCsO cs CS cs cs cs* cs cs cs' cs cs* cs* ocs wcso cs cs 3 8 wo 8 wcso oCO wCOo 8 9 CS CS CS cs' cs cs cs cs cs 8 Tt Os 3 Ocsn CS CS cs' cs cs cs cs* cs* cs eTsi CS cs cs cs 0o0 00 0cs0 CS cs cs 8 ccss CS cs oCO TCOt CS* OCOn so CS CS CS oCS VCOS wCOo 3 CS 5 o Tt wo CS* owo StjO- owo cs wwoo CO cs VCOO wwoo cs 8 VwOo VO cs* cs wo VO CS CS CS* cs cs cs cs cs' cs cs* CS Os Tt owso tC-O CwSo 0w0o cs cs' cs cs Tt cs so Tt 8 c-; cs cs o wr-o 00 V0O0 CS* cs cs cs* cs cs* CS 0w0o Ct-O* CS cs 158 2.56 2.87 2.53 2.48 2.44 2.11 1.97 1.84 1.79 1.75 1.70 159 2.61 2.71 2.81 2.92 2.63 2.58 2.54 2.07 2.02 1.93 1.75 1.71 160 2.65 2.75 2.85 2.96 2.68 2.63 2.59 2.54 2.03 1.94 1.89 1.80 1.76 1.71 s o00 VOOn cs cs cs* T00t wOon 8 cs CS CO 8 0o0 CO co 8 CS Ot-s T00t 0000 rO;n cs cs cs CS Os VO CS cs 161 2.69 2.31 2.26 2.22 2.13 2.04 1.95 1.77 162 2.73 2.94 3.04 2.79 2.74 2.65 2.51 2.27 2.13 2.00 1.95 163 2.98 2.84 2.79 2.75 2.61 2.41 2.36 2.32 2.23 2.18 2.05 2.00 1.91 1.87 C00S 164 3.02 3.13 2.89 2.57 2.33 1.92 TCOt OCOn rw-o cs r- 00 VO cs' cs VO 00 V0O0 8! 8 CO C00S cs o Tt VOOn VCOO cs wo Tt ON Tt owo OSZ 0C0O cs 3 cs r- Tt VWOO cs 8 wVOo CS* cs 0w0o On 0T0t O00N TOtn cs cs cs' cs* CS 0000 cs CS CO VCOS CO WO wo r- VO r- r- 3.07 3.17 2.94 2.90 2.85 2.62 2.51 2A1 2.38 2.33 2.29 2.15 2.11 1.97 166 2.90 3.11 3.21 2.90 cs cs 2.56 2.52 2.47 2.43 2.38 2.34 2.07 2.02 167 2.94 3.05 3.15 3.25 3.05 2.91 2.73 2.61 2.48 2.43 2.21 168 2.99 3.09 3.19 3.29 3.10 3.06 3.01 2.87 2.82 2.67 2.62 2.53 2.49 2.44 2.31 2.13 169 3.03 3.13 3.23 3.34 3.15 3.11 3.06 3.02 2.97 2.92 2.83 2.67 2.63 2.54 2.27 170 3.07 3.17 3.28 3.38 3.21 3.16 3.11 3.07 3.02 2.98 2.93 2.88 2.77 2.68 2.63 2.59 2.54 2.41 3.11 3.21 3.32 3.42 3.17 3.12 3.07 3.03 2.98 2.94 2.82 2.78 2.73 2.68 2.64 2.59 2.55 2.46 2.41 2.37 2.32 2.28 C0O0 cs o00 <o 172 3.15 3.26 3.36 3.46 3.31 3.27 3.22 3.17 3.13 3.03 2.99 2.87 2.78 2.74 2.69 2.65 2.51 co Tt cs r- Tt cs cwso VwOo cs oc^ cs 00 Tf CS* cwso cs* vo cs VvOo cs* wo cs Tt OcN^ 0w0o 8 cs cs cs cs 173 3.20 3.30 3.40 3.51 3.36 3.32 3.27 3.23 3.18 3.13 3.09 3.04 2.92 2.88 2.83 2.61 ZLZ 99'Z rw-o cs CvoO cs cvos rvq- cs rcs* VO CS o00 cs On 0o0 cs' CO 8 CO 0cs0 CO* 174 3.24 3.34 3.44 3.55 3.42 3.37 3.32 3.23 3.19 Tt CO 2.93 2.88 2.70 2.57 2.43 0cs0 co 3.28 3.38 3.49 3.59 3.47 3.42 3.38 3.33 3.24 3.19 3.15 3.03 2.98 2.94 2.53 2.48 WooO cs 176 3.32 3.43 3.53 3.63 3.52 3.48 3.43 3.38 3.34 3.29 3.25 3.20 3.03 2.99 2.81 2.76 2.58 2.54 OvqO cs V0O0 cs 8 CS* 00 Tt CO CwOo co 3.36 3.47 3.57 3.67 3.57 3.44 3.39 3.34 3.30 3.25 3.13 3.08 3.04 2.99 2.95 2.81 2.77 2.63 2.59 00 ccos CCOO 0C0O CS CS cs cs cs* 289 1 <3 Coal Mine Dust Table E -2 (Continued). L L N fo r F E V j fo r males 58 3 \ 9 290 (cm) 1 7 1 9 2 1 2 3 2 5 2 7 2 9 3 1 3 3 3 5 3 7 3 9 4 1 4 5 51 53 55 57 59 61 3 Os s Tf rq Os tq 00 8 so Os 8 SO o SO o cs so cs **4 CO so cq ^4 Tf cs cs cs* cs cs cs CS CO CO CO CO co CO CO co CO 00 q CO tq Os rq 00 Os 00 Os os Os 3 Os o SO *-4 o cs so cs o CO so CO o Tf so cs* cs ci cs cs cs cs CO CO CO CO CO CO CO CO CO co Cq 00 tq CO 00 00 00 CO Os 81 3 8 S*-4' Os cs Os cs Tf CO ? SO o sq cs cs' cs cs CS cs CO CO CO CO CO CO CO CO CO CO rq CO 00 00 00 CO os 00 Os co o oo o CO *4 00 S' cs s cs Tt CO N CO Tf o sq CS* cs CS cs cs CO CO CO CO CO CO CO CO CO CO co cs 00 r 00 CS Os rOs 8 00 q CO 9-4 00 CO cs oo cs CO CO 00 CO CO Tf V Tf Tf sq Os sq cs cs cs cs co CO CO CO CO CO CO CO CO CO co CO N 00 SI r*Os 8 8 cs r- cs cs rcs CO CO 00 CO CO tT 00 Tf CO sq 00 sq CO q cs cs cs CO CO CO CO CO CO CO CO CO CO co CO CO O so Os o 8 *4 r- cs cs rcs cs CO t-** CO cs r- CO so 00 sq CO sq 00 q CS cs* CO CO CO CO CO CO CO CO CO CO CO CO co CO SO Os ^-4 o 8 - S *4 ^4 cs v cs CO S CO cs s; r- cs so rso cs sq r^> sq cs rq cs CO CO CO CO CO CO CO CO CO CO CO CO co CO CO $8 o O so 9-4 o cs V cs CO S CO S; V cs r- cs r^ so so sq q rq cq co CO CO CO CO CO CO CO co CO CO CO CO CO CO CO 3 SO o cs so cs o CO so CO o rf so S 1-H so VO so sq V sq V tq oo CO CO CO CO CO CO CO CO CO CO co co co co CO CO 3 s8. Tf Os Os so Ci CO in o so so so so SO SO sq r-. 00 oo CO CO CO CO CO CO CO co CO CO CO CO CO CO co CO 3 3 8co O^s4 cs Os cs Os CO \ so Tf so so o so o so sq t*^ oo 00 co* CO* co co' CO* CO* CO CO* CO* CO* co' CO* CO CO CO CO 3 300 CO 00 CO 00 ^4 cs cs CO co Os St Os in so s o so sq r- 00 00 so Os CO CO CO CO co CO CO CO CO CO CO CO CO co CO CO O so CO CO $ 3*4 so r*so cs sq sq cs tq 00 tq CO 00 00 00 3 85 8 co CO CO CO CO CO CO CO CO CO CO CO CO CO Tf so cq S Tf so V SO sq r-* sq cs tq r-> tq cs 00 00 00 CO Os 00 Os CO O N o co CO CO co CO co co CO CO CO CO co CO O' so Tf o so SO so sq S sq tq V tq cs 00 00 cs Os 00 Os CO o 00 o CO Os co co CO CO co CO co CO CO CO CO CO t*-' rf 8 83 o so so SO so sq *<4 tq S tq 00 so 00 SOJs rOs r- co 00 CO o cs CO CO co CO co co co CO CO CO CO TT soOs so os so so sq o tq so tq O 00 oo Os SO Os *4 o ro cs CO CO CO CO CO CO CO CO CO CO tj- Tf* CO 00 cs cq tT soOs 3in SO os sq so rq O 00 so oo 8 Os o 3 -4 co CO CO CO CO CO CO co CO cs r- cs cs cs cq ^t* O' ^t* 800 CO os Os Tf in q sq tq rq CO so o 8 so o ^4 SO CS cs cs rq cq CO CO CO CO co CO CO CO S' rr ^t* 8CO 00 CO Os Os V S tq tq 00 00 o so o o9--4 o cs VO cs 9-4 CO v cq cs CO CO co CO CO CO CO S' S'* Tf <fr* Tf Tj- cs rq S cq O 00 Tf 00 00 00 CO Os rOs o so o o Tf 00 cs cs SO CS cq so cq CO CO CO CO CO CO CO S' S' Tf ^t* 8 8so o rq rq 00 tq cs 00 r00 Os SO \ CO 00 cs V o SO oo cs CS CO CO co CO CO CO CO CO CO CO Tt 3 3so Os to so so 00 cs V o so s co r^ cs sq tq tq 00 00 00 Os Os o o11 4 CO CO CO CO CO CO CO CO CO CO CO CO Tf 3so 9t Os CO so 00 so cs sq S sq o tq S' rq Os CO 00m 00 Os so Os 8 CO CO CO* CO CO co CO CO CO* co* CO CO CO* co' O' 190 179 180 181 182 183 185 186 187 r-00 Tf 00 s CS 00 00 00 N Os ^-4 9-4 193 Appendix E Table E -3. L L N fo r F E V 1/FVC % fo r males 53 3 $ N Vl/>> jvn> os TT O' co <& Os CO in CO CO CO CO a ON' V) N a N Os Sf DU M p Os SO p Os* SO p Os so co Os so p Os* SO p Os* SO CO Os* VO CO Os VO CO Os VO CO Os vo CO vs SO co Os VO co Os SO co Os SO co Os VO p Os vo co Os VO CO Os so CO Os SO CO OS vo CO OS so in n in in n n n m wo m VTi in in in >n p in in in in in Os VO Os vo Os VO Os VO Os VO Os vO Os vO Os VO Os VO Os VO vs VO Os VO Os VO Os so Os VO Os SO Os SO Os SO Os so Os sO Os SO p r- O' r- r- r- r- r- r- t-N. pr- r- r- r- O' O' O' O' Os SO Os vo Os VO Os SO Os SO Os so Os VO Os VO Os VO Os SO Hvsi so Os VO Os VO Os SO Os VO Os vo Os so Os VO Os VO Os SO Os VO Os Os VO Os Os SO Os Os VO Os Os SO Os Os VO Os Os SO Os Os SO Os Os VO Os Os VO Os Os vo Os nvsv SO Os Os VO Os Os SO Os Os SO Os Os SO Os Os VO Os Os VO Os Os VO Os Os SO Os Os so Os Os vo i>H n4 --< --< o- O' o* O' o r^ r- o o o r^ o o o r-* o r*- r- o t^* t- o- O' O' d O' co o* co o* co o' co o* O' CO o* r- co o' r- CO o r* CO d r- CO o r*^ CO o CO d r*- co o r* co o c- co o CO o p C) CO CO O' co O' CO O' co d O' *t Tt Tt Tt st *t Tt ''t rt ^t Tt Tt Tt *t Tt Tt Tt Tt Tt Tt o* O' o* o r- o o r- d r- d r- o r- o r*- o r** o r- o r- o r- o r- C^* r- O' O' O' o O' SO o* SO o* so O' so r- vo o r- VO o r- VO o r- VO o t-* vo o r- SO o so o SO o r- vo o SO o r* vO o p SO r- VO O' so O' vo O' VO d O' 00 00 00 00 00 00 00 00 00 00 oo 00 00 oo 00 oo 00 00 00 00 oo o o O' d O' d O' o r- O r- o d r- d r- d r- o o r- o r- o r- o r- Q r- r- O' O' O' d O' P P Pp o o o p o o o o o o o *P^ O' O' O' r- <*4 > 4 4 P-4 p-H r- r- r- r^ r- r- r- r- k-H pH pH O' O' O' O' p 04 p CN| CN cs (N CN (N CN p p p p p p p p p p p P>H ppH 4 -4 -H -H --H pH O' o- O' r^ r- r- r- r- r- r- r** r- r** r- r- r- O' O' Tt tt Tt ^t Tf tT *t Tt ^t Tt Tt <t ^t Tt Tt Tt Tt Tt *4 >4 pH n4 PPH O' o* O' r- r- r- r- r- r- r- r- r- O' O' O' O' P P P P P*0 n n p^ *o *-4 n n wi p H n p ^4 pH p pH pH p p pppp pH H o* o* O' r- r- t^* r- r- r- r- r** r- t*^ O' O' O' O' p O' O' r-> ^.h o- o> r- r- ppPpppPppppp ^H ~4 -H H -H p-H p-H r- r^ r- r- r- r- r- r^ O' O' O' O' Os Os Os p O) p os Os Os OS Os p p p p p Os Os Os Os Os | -H pH ^H ppH w--H ^H O' O' O' r- C^ r- r- r- r- r- r- t- r- r- r- r- O' O' O' O' ^h 4 fH H P-, P --H P p v>H --< c4 o* oi i> oi O' c4 r4 r- cs* r- cs r- cs* r- CN r- r4 r-* cs r- ri r- <N r- (N r-* c4 r- cs* r- cs r- oi O' oi O' oi o* oi O' p p CO CO CO CO CO CO CO p p P P p P CO P p p P co (N O' (N o- oi O' cs cs r- (N r- cs* r- <s r- (N r^ <N r- (N r* c4 r- <N r- <s ri r- cs 04 r** oi oi O' oi O' oi O' P P P P P P Pp p n o n in n n p p p p p in cs O' cs c-i O' CN r-* cs cs r- <s cs r- CN <N r- cs r- ri r- CN r- cs r^ <s r- CN t-* oi o* oi O' oi O' oi O' oi O' P P P P P P P P Pso so vq vq p p p p p p p VO (sj (S ci c4 ri cs o* o- r- r- r- r- ri CN <vi ri cs ni (N cs cs oi oi oi oi oi r- r- r*' r*- r- r- r^ r- O' O' O' O' O' 00 00 00 00 00 00 00 00 00 00 oo p p 00 p p 00 00 oo 00 00 fs| o* (S o- oi <N r- <s cs cs r4 r- ri r- cs cs r- (N cs r- cs r- <s r- cs oi r- oi O' oi O' oi O' oi O' o ooo ooo o Oooo op o o fO O' co O' CO CO r- c<> CO r- CO r- CO CO r- CO CO r- CO r- CO r** CO CO r- co t*- CO O' co' O' co' O' CO* O' CO O' n Tt p cn <N o Os Os oo p P p P Tt p p p p Tf o- ^, o* Tt O' c- St r- Tt r- Tt r- Tf CO co r- CO CO r*- CO r- CO r*' CO r- CO CO O' CO O' CO O' co o* CO O' *0 Tt CO CO n. P P PH o o\ Os oo p Tt Tt p p p pH o* r- r- st Tt ^t* r- Tf r- Tt CO r- CO r- CO r- CO r- CO r- CO r- CO r* CO t-* CO O' CO O' CO O' CO O' CO O' p Tt p tn cs St o* O' O' r- o Os Os oo p P P p Tt Tt p p p p-H Tt CO r- CO r- CO r*' CO CO r- CO CO r- CO CO O' CO O' CO O' CO O' CO O' p Tt p cn cs O Os Os oo p P P P Tt Tt p p p p Tt O' O' o* St r- Tf r- Tt r- st Tt r- CO r- CO CO r- co r- CO r- co CO CO CO CO O' CO O' CO O' CO O' IN. 00 Os o paM 04 CO ipnp^ in m VO SO SO so n VO SO so O' SO oo so Os SpOH O' *--* O' 04 OpH' CO Tt O' in o* so O' O' O' S s <3 291 Coal Mine Dust 8 3 am u # sS tr CL v a V) f* 1/} no m co m in Os r^ *g s L <S S5 4 0) 9 .5 ** B O u w ? w _> pUM H & $ r) t** m co ro co fH CO a fS t^ (S S On h- M B 4) Jp) S3 ~ 21 25 co co CO CO CO CO CO CO CO CO CO CO CO co CO CO On NO On NO On NO ON NO ON NO On NO 8 ON NO ON NO ON NO 8 On NO si NO ON NO On NO si NO NT) NO NO NO NO NO NO NO NO NO >n NO NO NO NO NO soOn On On On On ON ON ON On ON On ON ON si ON si NO NO NO NO NO NO NO VO VO NO NO VO NO NO NO r- r- r- r- r- r- r- t- r~ t-* f- r- r- tOn On On ON On On ON On On On On On ON si ON si NO NO NO NO NO NO NO NO NO NO NO NO VO NO NO NO On On On ON ON On On On On On ON On On On ON ON 8' On 8 ON 8 8 d ON 8 8 8 8 8 8 On 8 NO NO NO NO NO ~4ph pH pH pH pH pH pH ^H pH pH pH pH pH pH pH r-* o r- o r- d r* o d r- o d r- o o r- o d h* o d r* o r- co CO CO CO CO CO CO CO CO CO co CO CO CO co co ood o oo oo o ood ooo r- r- r- r- r- r- r- f- *r <* 't Nf tj- r-* d r- o t*" o r** o r** o r-* d r- o r o r- o d o d r- o r^ d r- d h* soNO NO NO NO NO NO NO NO NO vo NO NO NO NO NO r-- o r- o r- o r- o o r- o o r- o r- o o r- d d c^ o r- o d r- 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 r- o r- o r- o o r- o t- o r- o r* o r- o r- o r- o r- d o r- o r- o r-* oo P OooooOoooooo o ph pH pH pH pH pH pH pH pH pH pH pH pH pH r- r- r^ t*^ t- r- t- r^ r- r- CN cn cn cs CN CN CN CN CN CN CN CN CN CN CN CN ph pH pH pH pH pH pH pH pH pH pH pH pH pH r- r- r- f- t- r- r- r- r* Tt pH ph pH pH r- r- r r*- N; Tf Tf tT pH pH pH pH pH pH pH pH pH r- r- r* r-* r- no o NO in p in in o NO in NO NO NO o in NO pH pH pH pH pH pH pH pH pH pH pH pH pH pH t- r- r- r-* r- r- r r** r- r- t^ p p t>' r; r; r-t ^H pH pH pH H pH pH pH pH pH pH pH pH pH pH r- t- r- r- r- r^ r^* r* 1^- ON ON On ON Os Os Os On Os Os Os Os Os Os Os Os pH pH pH pH pH pH p^ pH pH pH pH pH pH pH pH r*** r- r- t- r- r*' r- C^ t^* P^ pH pH ^H pH pH pH pH pH pH pH pH H pH pH cn ci (S r4 CN CN CN CN CN CN CN CN CN CN CN CN r** r- r- r- r- r- r- r- r^ r-* r- r- co CO CO CO CO CO CO CO CO CO CO CO CO CO CO co <n (S ri CN CN CN CN CN CN CN CN CN CN CN CN CN r^ r-* r- r- r-* r- r- r- r* r^ r^ r* r* in NO NO m NO m in NO in in NO NO NO NO *o NO cn cn cn ri CN CN CN CN CN CN CN CN CN CN CN CN r- r-* r~ r^ r- r** r*- r** r* r- r- r-' r- t*"* P P P PNO vo so p VO p NO p NO p NO VO cn cn cn cs CN CN CN CN CN CN CN CN CN CN CN CN r- r- r- r- r- r*- r- r- r** r* 00 00 00 oo OO 00 00m oo cq OO' 00 00 oo oo oq 00 cn cn cn CN CN CN CN CN CN CN CN CN CN CN CN CN r-* r- r- r** r- f* r- r- r- r* r- r** r- r- P Po o o o o O o o oooo Oo co co CO CO CO CO CO CO CO CO CO CO CO co CO CO r- r- r- r** r- r- r- t-* r- r- o o Os 00 r- p NO NO CO CO CN pH pH o CO CO cn CN CN CN CN CN CN CN CN CN CN CN CN CN r- r** r- r- r-* r* r- r* r** r- r- r- o o Os oo r^ p *0 't CO cO fi pH pH o co CO ri CN CN CN CN CN CN CN CN CN CN CN CN CN r- r- r^ r- r- r- r- r- r* r- r- f" o O Os 00 sCO CO CN CN r- r- r- r- NO NO NO Tfr CO co CN pH pH O pi pi CN pi pi pi Pi CN o o Os 00 r- NO NO NO CO co CN -H pH o co co cn CN CN CN CN CN CN CN CN CN CN CN CN CN r-- r- r- r- r- r- r- C^ r- o00 On pH CN CO NO NO r- 00 On r- pH rpH 00 pH 00 pH 00 pH 00 pH 00 pH 00 00 pH 00 00 pH 00 pH pH CN CO Os O On pH pH 292 Appendix E 2.24 2.14 2.02 1.99 1.97 1.94 Table E -4. L L N fo r FVC fo r females 1.93 1.91 2.00 2.03 2.00 1.98 1.95 1.93 1.88 1.97 1.94 1.92 1.89 1.87 2.00 1.97 1.94 1.92 1.89 1.87 1.84 1.82 1.79 1.77 1.74 1.76 1.73 1.71 53 55 57 59 61 wz 861 961 861 061 661 16*1 961 661 061 861 981 681 161 2.01 1.81 1.77 53 3 pH 00 00 pH 00 CN CN00 o pH CO CO CO CN oi oi oi oi oi oi oipH cs 3 o CO 00 00 fH pH CO VO 00 00 pH 00 NO 00 pH 1.88 o CN 8 CN pH CN CO pH oi O' H oi o ri CN CCNO oi O' rCNi 0 CO 01 CO CO oi O' CO oi ? oi 2.25 2.23 8 8 CO VO ON O pH ^H CN CN CN CN oi oi VCON OCNs CO CO VO CO Os CO 9 oi oi oi oi oi CN CN CNVO 8 o 00 CNO H pH pH CN CN CN CN oi oi CONs CN CO vcno ON CO CN vn oi oi oi oi oi oi 1.84 1.81 00 00 O CN 3 CN 00 o CN p4 CN pH CN 00 pH CN rCNi a oi 0CN0 oi pH CO oi co oi 0co0 oi 5 00 oi CN 1.94 O'O O' 8 3 o* 0 s 8 CN COH CO CO CN c4 CN CN CN CN oi oi 01 oi oi 2.40 5 O' N; 0vn oi oi 01 2.35 2.33 1.95 1.93 8 8 CO pH VO pH ON pH CCON VCON OCNN CN CN CN CN CN CN oi oi VCOO OCON co 8 ONtn oi oi oi oi oi 1IO-H 8 <3 s CN VO On pH CCNN *CoN CN CN CN CN CN CN CN CN 2.29 2.32 OcoN CN vn ON*s. CvNn oi oi oi oi oi 2.59 2.56 2.46 2.43 2.65 2.62 2.55 2.52 2.45 2.42 2.55 2.52 2.49 2.41 2.39 2.36 2.35 2.33 2.25 2.23 2.15 2.13 2.05 2.03 2.00 1.94 31 33 35 37 39 41 43 45 47 49 CN 3 CN g CN pH CN vo ^4 CN 00 CN CpHN CN !Q CN C0N0 CN CO oi CvOo oi C0O0 oi rr oi vo oi 00 oi vpnH oi vnn oi v0n0 oi 3 CN O CN CN '`f CN O' pH CN oCN CN CN CN oCNCN Oco CN CO oi oCO* oi 8 oi 5 oi o* oi 0VO 01 vn oi Ovn' oi 8 oi 933 913 ZYZ 961 661 8 O pH CN CN OCN CN oCO CN 0Tt VO 0vo CVOO s cVOo 01 oi 01 oi oi oi 88 oi CN 2.19 2.22 2.29 CCON CN 2.49 vvoo oi oi 2.45 2.43 2.35 2.08 2.01 0 01 00 CN pH CN NO pH CN 00 CN 4 CN wo CrNi C0N0 CN CHO CN 0CO0 CN 0t0T vpoH oi oi 0vo0 VpOH oi oi 00 so oi c^4n NO pH On CCNN VCON OCNN CCNO VCOO OCOn 8 CvoO VVOO 8 CVOO vo 00^ COO; O0^' ci CN CN CN CN CN CN CN CN CN oi oi oi oi oi 01 oi oi pH i>4 00 pH CN VCON 0CN0 CCON VCOO oi oi CN CN CN CN CN CN CTNf CN Orrs CN voo Ovnn oi oi 8 VOs. COO; VOO'. ON oi oi oi oi oi 2.65 2.62 2.41 2.38 2.73 2.83 2.93 2.91 2.88 2.86 2.83 2.75 2.26 2.32 9LZ 9L'Z 993 L9Z LZZ LVZ 2.84 2.81 2.79 2.74 2.72 2.73 2.71 2.68 2.64 2.61 2.61 2.58 2.33 2.31 pH O' pH CON C'CNf CON' oi oi CN CN CN CO 0CO0 CN CN 2.44 00 pVHO CN CN NO O cn CCON OCN' OCO ri CN CN CN CN oCO> 8 5 O"Vt' OVO s oVO* CN CN CN CN CN oi oi 0p 01 0O0; v0n0 CN oi On oi OCNN oi VCON CN OCNn CN CCOO CN VCOO CN oCO* CN CO CN VO CN 0VO 01 CVOO CN VVOO oi 8 oi CNOO oi oVO* oi 0O' 01 Oo-;' 000 oi 01 O00' oi 2.94 2.92 2.89 2.85 2.82 2.81 2.79 2.80 2.78 2.75 2.73 2.65 2.62 WO 00 ri cn CN rCNi 2.35 2.42 cOon VO ON CN VVOO CN CN CN CN CN 2.59 VO v VON oi oi 000 vO 00 % 01 oi CN 2.61 2.58 2.51 2.48 27 a rCN- co CO 0CO0 pTHf V) oi CN CN CN CN CN CN pVHO VVOO CN CN 8 oi 2.68 CoN; oi 3 cn oco CCOO CO 8 3 o*a** oi CN CN CN CN CN CN TVOf OVO CN CN 3 00 V O; OTf; oi oi oi oi a OCNn oi CcoO CN NCOO CN CN CNO*. CN VO CN o *0 CN COo CN OVO' CN 8 CN CO V CN 0 O'; O; OO;' 01 oi oi 00 O00' oi oi 00 O) oi 2.57 2.68 2.51 2.61 2.69 2.32 2.43 17 19 21 Nco VCOO OCOn 8 On CN *0 V>Oo OVON CVOO 8 ri CN CN CN CN CN CN CN CN CN CN Oco CcOo NCOO CN CN CN CN VO OTNf CVON VOo 0VO0 CN CN CN CN CN C0O^ voo-; 000 c0o0 v0o0 $ oi oi 01 oi oi oi 3 poH* O' O'. 000 oi oi oi oi 01 $8 oi CO 000 01 2.70 2.63 2.23 OCN OCNn CN CN 2.35 2.38 2.41 2.45 2.48 vo 8 oi oi 0VO0 2.79 2.89 2.95 2.92 2.82 2.55 2.53 5 148 149 150 151 152 153 154 155 156 157 159 160 161 162 163 164 165 166 167 168 293 (c m ) Coal Mine Dust Table E -4 (Continued). L L N fo r FVC fo r females 19 8 rt 3 0T0f in Tmf 0in0 VO s 0VO0 r; 0r-0 00 0S0f o00q q CN ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri s CO oi r* ri oin ri cino ri irnri oVO ri CvoO ri q ri or; ri ri rr** ri ooo ri tj* rqi r0*0 ri 8 ri q ri s Os cino vino Oins CvoO 8 OVOs CO VrO* Or>s c0o0 VoOo O00s CqO 8 ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri A os cinn inn Oins cqn qin oqs <rN* irn- On CoNo 00n oOqs 8 iqn OOss ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri V) in ri iTnf ri 0*n0 ri vq ri s ri 0q0 ri q ri r* ri 00 ri oo ri oq ri 0o0q ri Os ri Os ri 0q0 ri o CO 53 55 ^int ri VinO ri 8 ri 3 ri r rqi oq ri r* ri rr*; ri ooq ri oq ri r0-0 ri 8 ri 3 ri rqri 8 CO 3 CO VinO 8 cVOo VvOq or* CrO- VO o00 CoOq VoOo 8 cOos VOOn 8 coo 8 ri ri ri ri ri ri ri ri ri ri ri ri ri CO CO CO in Oton cVOn ivnq OVOs crn- iqn Or;s <0N0 i0n0 oOos CqN iOns OOss CoN oin 8 ri ri ri ri ri ri ri ri ri ri ri ri ri CO CO CO A \o ri iVnO ri 0vq0 ri q ri irnri 0q0 ri oo ri i0n0 ri 0000 ri Os ri iOns ri O00s ri o CO oin CO 0o0 co iH CO 3 CN rqri oq ri qTt ri r ri ooo ri oq ri ro-o ri Os ri Os ri r- Os ri vH o CO 3 CO orCO CO CO 43 45 8 8VVOO or* cqo vqO o00 CoOq VoOo cOos VO Os 8 coo o CO v^4o CN ri ri ri ri ri ri ri ri ri CO CO CO CO CO CO 8 sOvos cqn VqO Ot-s* coqn V0O0 O00s s VOOs 8 8 CN vo Os ci ri ri ri ri ri ri ri ri ri CO CO CO CO CO CO Tt q mq 0q0 00 ionq o0q0 Os iOnn 0O0N o-H ion 0o0 in 00 CCNN ri ri ri ri ri ri ri ri ri CO CO CO CO CO CO CO 8CO o00 00 0r-0 Os r- Os o s ro* tj- 00 CN CinN C0N0 CO ri ri ri ri ri ri CO co CO CO CO CO CO CO CO CO 8 Oco 0CO0 0VO0 cqo VOOs 8 coo ro- CO r- oCN CN Cr*N COH ctjo- ri ri ri ri ri CO CO CO CO CO CO CO CO co co co 33 35 s s s>00n O00s cOns vOos OOss CO VO CoN CCON CVON oco CCOO rco ri ri ri ri ri CO CO CO CO CO CO CO CO co co co s 250000 Os iOnN 0O0s ion o n in Os CCNN CsoN CONs CCON vCoO COOs ri ri ri ri CO CO CO CO co CO CO CO CO CO CO CO sCO On Os Os o 0o0 -H 00 CN CNn C0N0 CCON CinO 0CO0 CTTN (N ri ri co CO CO CO CO CO co CO CO CO CO CO CO N cOos ci Or-s ri 8 co coo co roCO CO Tf CO CO roi CO CTNt co CrNCO CO CO CO CO 0CO0 CO CO 3 CO KCN VOOs OOss cOo 8 g CqO vo on nCO VCON oCO CCOO cro- o 5 rT*f ri ri co co CO CO CO CO CO CO CO CO co CO co CO CN 0O0s ri con co ion co g co cn CO in CO Os CO r4 cn CO CVON CO CONs CO CcOo co VCOO CO OCOn CO CTOf CO vTot CO oin co sfCfN) CO co 0o0 co co in CO 00 CO CN co *(Nn CO 0CN0 CO CCON CO *CnO co Ocos CO CN CO iTnf CO OTsf CO CinN CO s(S ro* o *THf r* cn <s Cr*N CO CO 0CO0 n 00 in inn CO co co CO CO CO CO CO CO CO CO co CO CO CO CO 9\ CN Os CN vOos ri Os Os ri CoN co oin CO 0o0 CO CO CO r* co CN CO TCNt CO CrNCO oCO CO CCOO CO VCOO co CoOs CO rf-H C0N0 onq 0000 Os Os 00 Os o 3 ro* o * CO \woH Os CCNO CvoN OCNs CN ri ri ri ri ri CO CO CO CO CO CO CO CO CO CO ,wfE(*i. OVOs o r- Cr*N CO r*** irn* vo r* 00 Or-s o00 0**0* C0N0 C0O0 0*0* 294 Table E -5. L L N fo r F E V i fo r females 3 3 cTof co fS :>? 5 M. mw 00 OV Ov OCOv VvoO oi 04 oi Ovo --vo' 04 vo mCO vo vo vo vOo vo 17 2 1 25 27 29 31 33 35 37 39 41 45 47 49 51 53 55 57 59 61 o00 C0O0 V0O0 0000 CO-N* 2.13 2.25 2.09 2.06 2.03 2.00 1.97 1.95 1.92 1.89 1.86 1.77 1.74 1.71 1.68 1.65 1.62 1.59 1.56 1.53 1.50 1.47 1.44 191 891 161 161 ZVZ 903 60'Z ZI'Z 9l'Z 2.27 2.03 2.00 1.97 1.94 1.88 1.82 1.79 1.76 1.73 1.70 1.65 1.62 1.59 1.56 1.53 1.50 1.47 06'1 961 LVZ 991 691 991 981 681 961 181 061 66'l 91'Z OVZ ZZ'Z 613 ZZ'Z LVZ OZ'Z 09'I 00 VO 0*0fr 0040 00 OVZ ZZ'Z 981 681 60'Z ZVZ LZ'Z ZVZ 00 0040 V0O0 o00* 00 c0o0 V0O0 H 00 0o0o co VO 00 0 01 oi oi 00 oi oi oi oi VO oi 0CO 01 2.09 8 2.00 1.94 1.85 1.82 1.79 1.76 1.73 1.70 1.67 1.64 1.55 1.52 1.49 2.22 2.33 2.14 2.11 2.05 2.02 1.99 1.93 1.87 1.85 1.79 1.76 1.73 1.70 1.67 1.64 1.61 1.58 1.55 1.52 2.25 2.36 2.14 2.11 2.08 2.05 2.02 1.96 1.93 1.87 1.84 1.75 1.72 1.69 1.63 1.60 1.58 1.55 CO VO CO 8 881 161 ZVZ 061 961 66'I 9ZZ 281 061 96'I 661 000^ oo CO 0 CO VO oi 01 oi oi VO 00 oi oi vt VO oi oi oi oi 04 oi oi oi s8s oi oi oi oi 3 oi 00 04 oi oi o04 oi oi oi oi 04 oi 2.28 2.39 2.07 2.05 2.02 1.99 1.93 1.90 1.87 1.84 1.81 1.75 1.72 1.69 1.66 1.63 1.60 1.57 2.30 2.42 2.25 2.19 2.13 2.10 2.07 1.98 1.95 1.92 1.83 1.80 1.77 1.75 1.72 1.63 2.33 2.45 2.27 2.24 Ov 2.13 2.07 1.98 1.95 1.92 1.89 1.86 1.83 1.77 1.74 1.71 1.68 1.65 1.62 2.36 2.48 2.30 2.24 2.21 2.15 2.00 1.97 1.94 1.92 1.77 1.74 1.71 1.68 1.65 CO o* T* O* Ov oi oi oi o* 04 04 04 04 oi oi oi oi co 04 VO 00 04 04 oi oi O04v CO 3 0C*O* oi oi oi oi 0co4 04 oi cCoO oi oi oi o VO 04 oi oi 2.24 2.21 2.15 2.03 2.00 1.97 1.94 1.91 1.79 1.76 1.73 1.70 1.67 2.42 2.53 2.35 2.32 2.29 2.26 2.23 2.14 2.09 2.00 1.97 1.94 1.82 1.79 1.76 1.73 1.70 00 CO vvOo 2.45 2.35 2.23 2.05 2.02 1.93 1.82 1.79 1.76 1.73 Ov vo 2.48 2.37 2.29 CO 2.11 2.08 2.05 2.02 1.93 1.84 1.75 961 00 00 61 Z CO 00 8 s oi 04 oi 3 o* oi oi oi oi o* oi 04 oi CO VO oi 04 0VO4 o* CO TT 2.51 2.62 2.43 2.31 2.22 1.99 1.93 1.90 1.87 1.84 1.81 2.53 2.65 2.46 2.43 2.34 2.31 2.28 2.25 2.22 2.04 2.01 1.98 1.95 1.92 1.89 1.86 981 861 61"Z CO oi 04 38 oi oi CO 04 981 681 04 o- 04 04 CO oi oi oi o* 04 oi 04 CO oi 00 VO oi oi CO 161 OO'Z LVZ O' 04 00 vo 04 VO r- O; 00 oi oi oi 04 2.45 2.42 2.39 2.36 2.33 1.95 1.92 1.89 1.83 2.59 2.48 2.45 2.42 2.39 2.36 2.33 2.24 2.21 2.18 2.15 2.00 1.97 1.94 1.92 2.62 2.73 2.53 2.50 2.44 2.41 2.38 2.36 2.33 2.24 2.21 2.18 2.15 2.12 2.09 2.06 2.03 1.97 1.94 161 LVZ 6ZZ 8 oi % oi o* Tf 04 VO oi oi vo oi 2.65 oi vo vo 2.53 2.44 2.41 2.38 2.35 2.32 2.26 2.23 2.20 2.14 2.11 2.03 2.00 1.97 1.94 961 o* oi 04 oi 2.68 2.79 2.58 2.56 2.53 2.44 2.41 2.38 2.35 2.32 2.29 2.26 2.23 2.14 2.11 2.08 2.05 2.02 1.99 1.93 961 661 LVZ 9Z'Z 6YZ o* CO 04 oi 2.71 2.61 2.58 2.55 2.52 2.46 2.43 2.34 2.31 2.28 2.23 2.20 2.14 2.11 2.08 2.05 2.02 oo o vOov S 3 04 VO co VO 3 0000 >0 SO VO VO Appendix E o- VO 00 VO Coal Mine Dust Table E -5 (Continued). L L N fo r F E V i fo r females 3 3 ^4 v 9s hIT) V) V) CirO> tH V) 9Tsf rT*f o cTof "T & Tf < 9cos r co V) co CO co fH co aN r* (S to cs 3 v tf"H* w .w. 296 21 $ ^4 o s S 8 4 r^*4 Os CcsS rcs OCO ccqs wo CO rCO- ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri o 3 p s cs T*4f o cs cs to rcs ocq ccoo wo cq 0cq0 8 CS cs ri ri ri ri ri cs ri cs ri ri ri ri ri ri 3 S o cs to r**4 ocs CcOs tcos c0s0 ocq cCoO to cq ocqo Tf CO ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ro- o co t^o4 0^40 o CS cCsO CSOS 00 cs *4 CO co co VO co 0CO0 Tf 3 VTOf ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri o co VO 00 cs CcsO SO CS 00 cs CO Tf cq cvOq Os cq 3 rT-f Os cs* ri ri cs* ri ri ri ri ri ri ri ri ri ri ri ri c^o4 VO 00 cs Tf CS CVOS COSs iH CO a rcq- Os cq cs 3 rT*f % cs wo ri ri CO ri ri ri ri ri ri ri ri ri CS* ri ri ri no4 Os cs Tf cs cs COSs cCOs Tf CO CO oTf cTsf to Tf otq cs wo wo wo ri ri ri ri ri ri ri ri ri CS* ri ri ri ri ri ri Os cs cs cs r* cs oCO cs CO to co rco oTf CO Tof 0T0f otq cwoo wo wo 0tq0 ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ccss tcos cs oCO ccoo tcoo 00 CO s cTof tTof 00 to tcqo stqo 0w0o SO ri ri ri cs* ri ri ri ri cs* ri ri ri ri ri ri ri to ri 00 cs oCO CCOO VcOo 0CO0 Tf cTof VO 0T0f to Tf tq tsqo Owos p4 SO 3 ri ri ri ri ri ri ri ri ri ri cs* ri ri ri ri ri 00 cs f-H CO ccoo VO co 00 CO Tf 5 SO OTsf tq Tf tq to Os tq csos 3 rSO ri ri ri cs* ri ri ri ri ri ri ri ri ri ri ri ri cq Tf co VcOo Os CO Tf 3 r* OTsf cs tq Tf tq rtq* s cs so VOq rp- Op ri ri ri ri ri ri ri ri ri ri cs' ri ri ri ri ri CO rco os co cTsf 5 rT-f oto cs tq to tq r* tq 8 csos sqq 00 VO op co p ri ri ri ri ri ri CS* ri ri ri CS* ri ri ri ri ri rCO- s cTsf tTof Tr-*f oo CtqO oo 0to0 8 CsqO tq vO 00 VO r*^ crqo SpO ri ri ri cs* ri ri ri ri ri ri ri ri ri ri ri ri o *9 cTof tTof 0T0f o to ctoo ttoo 00 tq VO csoq vVOq 00 VO r Tf VtqO Ops ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri CTOf STOf T00f to co tq VO o 00 tq vq 3 VSOO Os vq r-; Tf r- r- Os coso ri CS* ri ri ri ri cs* ri ri ri cs ri ri cs* ri ri 5? 0T0f to Tf to stoo Os tq **H so 8 r* SO SOOn cPs Tf r rr*; o00 c0s0 wo 00 ri ri ri cs* ri cs ri ri ri ri ri ri ri ri ri ri OTsf to Tf o r* to Os to cs VO 3 r* vO or- cs r* to r- r* r- o00 cs 00 wo 00 00 00 ri ri ri ri ri ri ri CS* ri ri ri ri ri ri ri ri cso Tf to rto o SO cs VO to vq rvq or- cps to 00 r- o00 CO 00 wo 00 00 00 *4 P ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ttoo r* to 8 co sq tvoq 00 vq op CO to 0p0 00 0C0O 0SO0 0000 p4 Os a ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri 00 to oVO co VO to VO 00 vq -4 CO r- >r0- 0r*0 00 0T0f 0VO0 Os 00 P Os r- P ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri ri so CO vo VO sq 00 VO p Tf r-; SrO- Ops 00 Tf 00 0r0- 0O0s 81 OTf) Os pOs ri ri ri ri ri ri ri ri ri ri ri ri cs* ri ri ri 3 Ovos r- Tf p r- Or-s c0s0 T00f 00 % a Os 85 8 8 ri ri ri ri ri ri ri ri ri cs* ri ri ri ri CO CO 00o 00 00 Os cOos SOOs OOss cs O oo o00 Tf VO Os CS cs wo cs 00 cs ri ri ri ri ri ri CO CO CO CO CO CO CO co CO CO co p pVO pOs c0s0 tooo 0000 Os Tf Os Osos os Os 8 q O o00 Tf ri ri ri ri ri ri ri ri ri ri CO co co CO CO CO OVOn or- r^4* cs rcp-*o4 Tf r** tro* SrO* rr*4 00 r-4 Os f-4 O004 00 0cs0 C0O0 00 Appendix E $ 3 iH VO OV)t V) lV/>) CVO) V) Os J<S 50a8 f- Cm U V) J<wp CO u > fH rH & >< w 2CO5 u Z */> CO VO A CO CO _aj 3 CO H NOv 37 21 a 0\ h +* s p 25 27 CO R N R o R Os OVOs r*OVOs wo OVOs qvOs CS OVOs P"H OVOs Os 5g r- s VO s 0VO0 CO $ s o S3 oo vo p vB p so p vo cs VO rr- WO r*- CO CS r- h- Os OvOs rOvOs VO OVOs VOOs CS VOOs pp4 OVOs p 00 vo 00 0vo0 p v0o0 0VO0 p 0VO0 v0o0 00 VO oo VO VO VO W^ Kvo o^rH- 00 r- rt-* wo r- r- OS OVOs rVOOs VO VOOs OVOs Os VO Os vo p 00 vo 00 00 o p 00 VO 00 vo p 00 VO -H 00 VO q 00 VO oo tV>O CO pr-^H p^r-H oo r- wo Tf CS r- Os OVOs rOVOs p Os 'St Os VO cs Ovos H vOos p 0VO0 00 0vo0 p 00 so p o6 VO p 0VO0 H 0vo0 p^r-h P r** CO r- cs r* r- 00 r^ ' wo ` tT CS r- Os Os vO tos VO VO Os VO ^r ovos CO Os VO -H VOOs p oo vo 00 oo vo p 00 vo p 00 vo o cr*s- 00 r- r- P r- P C" p rpm- _h' r- Os rr* wo r^* 'd' CS o r- Os Os vo r- Os o VO Os VO Os O CO Os so p-H os VO p 00 vo 00 00 VO CO cr*i -H CrS- crs- oo r- t> r- P r- p pH cs r- Os r- rr*> wo r- CS r Os Os VO c- Os VO VO Os VO Xt Os VO CO qs VO si vo p Nr- Pcrs-' p Cr-S* cr*s* crs- oo r- p r- P r- p r* cpr>s-H t^* Os r* r> ' r- vo r- Tf CS r^ ppH os ovos 00 Os vo vo Os vo Xt Os VO p Cr-S 00 crs- p crs-* Pcr*s* CO crs- cs cs cr^s 00 r- p r^* P^rH- r-* cs ppH r** i-H r- Os r^ r- r-> VO r- r^ cs r- r- Os Os VO 00 Os vo CO CrO- ph CrO- Cr-O* oo crs-' crPs- p ct--s cPs* N Cr-S cs oo pcH- p r- wo r- c- p r- Os vo r- Xt C"- CS r** p-H r- p rC*O xt CO p Cr*O* co rC-O 00 cr*s p rcs-' Pcrs- p crs- cs cr^s crs- 00 p-H r** p P r^ p Os r- VO Xt r** t- r- r- r- r* p CrO- 00 CrO- vO Cr*O CrO- P Cr*O* CrO* PCO 00 cs p crs- wo crs- Pcrs-' cs cs r- cs r- P ^H r- p r- P r- Xt PH P pH i*H r- Os r- r- r- p r- r- p CO 00 CCO- PrCO- P CrO- p rCO- pH CO rco- 00 rcs- Ccrs-' wo cs r- CO cs r- p cs r- cs r^ P pH r- p p-N p p-H r- xt r^ P pH r- pH ^H r*- p r^-' xt r- P r* P CrO- 00 CO P Ct^O p CrO- P rco- P CO rCO- 00 cs r- p cs r- P cs* t"* P cs r- P cs r* CS r- PpH r- p -H r** p ^H r- xt H r** P^-* r- p P r- Tf PTt p Tf r* p CO* r- oo cro- P rco-' p CrO- P rco-' p CO r^ co r- 00 cs' r- r- cs' r- P cs' r- S; ccs-* cs cts-' cs r- P pH r** p H r- p vrS- wo PTt r- p Tf r- p r^-t Tt r- P r** Tj* Tf r- oo CO P co r- P CO P CO r* P CO r- CO 00 cs r- cs r- p cs r- xt cs r* P cs r- cs r- P wo t^* xt wo (N wo r- Wr-O P r- 00 P p Tf r- P r- p_ rC-t* r- 00 co r** P co P CO P CO r^ p CO r- co r- 00 cs r- r- cs P cs r- Xt cs r* p I/O r^ p wr-o VO WO wo cs wo r* p wr-o p r- 00 r- P r- c** P ^rt-* r- Tf r- 00 co p co P CO r- P co r- P CO r* CO Os CS r- p cs (S Sr-O* sro- Os wr*>o t> wo r- p wr-o wo r- p wo P wo P r-* 00 Tt p Tr-t p r- p Tf r- rf r- oo CO r- p CO r- p co r- P co r- P CO r- co r- p vrd- srd- cs rvd- VrO- Os Wr-O p wo' wPo r- 'd- rwo-' p wr-o p^ wt"o-* Prr-t 00 Tj* r- P r- P S' r- p r** pH r^ Xt r- 00 CO r- p co r- P co r- P co r- P sr^o p rso- wo rv-d rv-d cs vrd- rv*d Os wr*o* p wo P vr*o rj* JrO- rPw-o wo r- P Tf r- oo Tf r* p r- p Tt P Xt r* P xt r- r** 00 CO r- p CO r- p r-* r*` r- Os VO t" rvrd- wo VO rvd- cs vr^d vd p wr-o r^ wo Pwr-o wo r- P vo r- pH wo r- wo r^ 00 p S' r- p Xt r- p xt r- P Xt r- Xt C*** p r-* CO t"* CN r- r- Os vrd- rvrd- VO vd r- vo cs vrd- vd C-* Pwo oo wo r^ P wo wo CO wo r- p-H wS r- vS 00 xt r- P xr r- P Xt r- P xt P Ir/-O* 00 wr-o Pwo wPr-o Pwo t^- pH wr^o- wr-o 00 p r^-t P r- vt r^*-* cs S' r- Tf r-* p CO 00 CO r- P co r- P co r** P CO r** pH co r- CO 00 cs r** 00 r- p r- p Tr*f r* cs ^r-t p r- P cro*' oo CO* r- P cro-' P co P cro-' p co r- CO* 00 cs r- r- cs r- P cs r- xj; CS r- P cs* r- cs r- p pH oo -H r** 991 00 OT^Hsf jo WO cwso CwOo *--H wTot wwoo VO WO cwo- pH 0w0o VO 159 160 162 163 164 165 167 168 297 Coal Mine Dust Table E -6 (C ontinued). L L N fo r F E V 1/F V C % fo r females $ o 00 r-* to vt CN O Os r- q CN Os 00 SO r-' vO 8 id VO td VO to VO td VO td VO td VO s 3 co CN o 00 r- *o CN q q VO CO Os K vd $ vd d vo VO vO vo vo vo to td td td td d s VO VO VO VO o VO q wo CO cn o Os r- to CN q q q CO VO SO VO VO VO VO VO VO vd vo vd VO d VO VO SO s td VO td VO td o td VO td VO Os o 00 q to CO CN o Os r- to CN q r- q U) 00 VO v2 vo VO VO VO VO s id td d o vO VO e- co pH o 00 r- to CO CN o Os r- VO 'tt CN Os V) 00 00 00 vd vd vd vd VO VO td vo VO VO vo VO VO VO VO VO vo VO VO VO o VO VO V) q o CO <N o 00 r- to ** CN o OS o CN 00 00 00 00 00 vd d vd vd SO so VO VO VO vo VO VO VO VO SO VO vo vo o vo VO co O 00 q to CO CN o 00 q to Tt CN OS r- SO i/i Os 00 00 00 00 00 00 vd so vd VO VO vo VO vo VO vo vO o VO VO so VO o so VO CO pH o 00 vq to CO CN o 00 r- tn CN --i Os i/i Os Os Os 00 00 00 00 oo' 00 r-' so VO vO VO vo VO VO SO VO VO VO so VO VO o VO Tf CO PH o OO q to CO CN o q q Tf CN Os Os Os Os Os 00 00 00 00 OO 00 vo vO VO VO VO VO VO VO VO VO VO so vo o vO VO q 00 VO to co o 00 q to CO CN q q tq Os Os Os Os Os Os Os 00 00 00 00 00 00 vO VO vo VO vo VO VO VO VO vo vo VO VO o SO VO CO Os 00 VO o CO O 00 q o CO CN Os o o Os Os Os Os Os Os Os 00 00 00 00 00 00 r- r^ vo vo vo VO VO VO VO VO vo VO VO o vo VO co VO CO pH Os 00 vo to CO CN o oo to Tt CN oo d o o Os Os Os Os Os Os Os 00 00 00 00 00 r- r- r- r- VO VO VO so VO VO VO so VO VO VO Os r- VO CO O 00 VO to cn CN 00 q o oo o o d d o o Os Os Os Os Os Os 00 00 00 r- r- r- vo VO VO SO VO VO VO oOs fO cn N Os 00 VO CO o 00 to cn CN q pH p*H o o o o d o o Os Os Os Os os Os* 00 o or- r- r- r^* r- VO VO O VO vo q CN pH Os 00 VO tj- co o 00 r~- to CO CN CO pH pH ph p^ o o o o o o o Os Os Os Os Os r- r- r- r- r^* r- r- vo O SO VO vo V) ON r- VO <N ** Os 00 vo o CO 00 tn oCO p-4 _2 o o o o o Os Os Os r- r- r- r- r- r-* r- r- r*' e' VO VO VO q q oCO CN ^H q co Os 00 to en pH 00 CO CN r- crn- ph r- ph r- r^* r** o o o o OS r- r-" r^ r- r- r- vO q q ohH CO cn pH Os q cn cn CN CN ^H* r- r- Tf CO Os 00 to CO CN -H o o r^* r- r- r- r- r- r- 25 27 29 q qOs to "t (N q co "1 00 so to cn cn cn cn CN CN H w-4 p-4 p-H r- r^> r- r- c-* r- r- r- r- qCN o q q q CN q00 Tf cn oo co CO cn CN CN CN CN CN p-H ^H r-* r- f" r- r-* r- r- r^* r- r- r- r- q q qo cn o q VO 'T CN 00 CO co CO CO CO CN CN CN CN CN CN H pH pH r- r- r*- r- r- r^ r^ r- r- r* r- r- r- r- r- q qqoo to ''t CN o q CN -H q oo q CO r- CO f'* CO CO CO r- CO t-"* CN r^ CN r- CN CN r- CN r- CN r- r- ^H r-* pH t- pH r- cn o 00 q o CN -j q VO cn PPM q q Tf r- Tf CO r- CO r- co r- CO r** CO r- cd CN r- CN CN r- CN CN r- Cr^N- pH r- pH r- 21 q qOS to CN -- 00 to q CN o 00 to crn- ccn^ CN r- CrN- CN r- r- r- r- r^* r- r- d r- VO to CO CN o 00 r- to CN Os 00 VO to CO PH pH r-* r- o r- or- or- or- o r- or- Os vO Oos Os SO ON SO Os VO ? Os o pH CN CO Tf 42- VO r- pH pH vo r- r- 00 r* Os r- OO 00 CN 0P-0H CO 00 pH 00 pH 298