Document Y5yRV8bG7gQo36mYm7B1Nmnn

in the vice ixfc dationa^ nUe' ers# n4 by in-| or bjf uippecT: _*. -steel nenes,P, cetera.* 1 boiler; .X Eugene W, O'Brien Managing Director Pranoii C. Smith, Editor Hunter R. Hughe*, Jr, Aaaocltte Editor Richard L Prieti Houtbwegurn Editor W. E. Ccogler Production Manger litllntu RoprototttvUror " ,,,vRaj~|3t,.}p m*t 18th at,, N. Y,--Fhone. nw 8-2363. William S. Hottnuo, 2S Bowdoln Ht,, Maplewood. >'. J,--Phone So. Ortas* a-atei, Maynard L. Durham, 61 Covin*toa Hoad, Buffalo 16, N. T,-- Phone, Amherst 6332. A. H. C. Smith. 206 Auditorium Building. Cleveland 14, Ohio --Phcint, Cherry T3S2. p. 0. E. Johnson, 168 North Michigan Are., Cbl'> ' 111.--Phone, Central L. B Chappell, Aupdilttoorriluom___B_i_de_., ll4e2es7, C_wpaeelnaift, 3th -- St., Lot Ang*e- Phone, Tucker 6368. Rlebard L. Priee*. 1341 Liberty Back Bide.. Dalian, Teiaa__ Phone, Central T873. ,, Anneal Subscription--*1.00 Canada--61.00 ; Forein 12.00 Publitfiod Mooffity by w R, C. SMITH PUBLISHING CO. Bubliehere aleo of: Cotton, Ettc- *iSrotocwuotinhl e*SrrrnfifutBAuA, iulSdfoiqnufgftwhetSirvun*ppfflaieJrsod.uiernoarrl,, Hooke. Prealdent: R. P. Eaeouti-ve vie*-Preeid#i; o' ^ McAllister, Vice-President: " ,? O'Brien, Vice-President: f- _ C. Smith. Vice-President; i,p- P*k, Vice-President: 0. A. "oarpieng, Treasurer ; a. F Rob ". Secretary. Wiforiof rod Etoeuiivo Olfitrt GRANT BUILDING ATLANTA, GEORGIA HR, 194*; 02/0 T'd PLAINTIFF'S j i EXHIBIT Wml aiw w SOUTHERN P0I1IER io mmiCTDV CONTENTS Meehanlcel Handling of Croi*-Tle, by A. M, Deiter*....... .................. 40 A Good Lunch Helps, by Francii C. Smith............................................. 46 Profit* in Plant Layout, by tdragory M. uexTer -n Progres* In Candy Making, by R. A. Brock and F. W.Hayward .......... 58 Hygienic Importance of Dust, by N. V, Hendrick*..............................: 61 Centrifugal Boiler Feed Pump*, by Igor J. Karaisik.............................. 65 Labor Turnover, by Philip Panfield.......................................... . 74 Damage by Fly Ash Erosion, by Harry M, Spring............................... 78 Electric Circuit Troubles, by Thome* Trail.......................................... 84 A History of Power, by Carl J. Eckhardt, Jr............................. 86 PRACTICAL DISCUSSION Beutlar Operation Improved........ .... 6* Tight Bolt-Thread* .............................. 74 Magnetic Street Cleaner-,., ....... 62 Ladder Alda Maintenance .................... 24 Simple Ale Manifold ............................ 62 Treating Alda Bepain .......................... *4 | Reading Meiera and Qangee............ 64 DEPARTMENTS TACTS AND TRENDS-,....................... 5 INDUSTRY, WEARS. .36 BUYERS' INFORMATION..................... 8 TIKBLY COMMENT 8.................. ... 37 NEWS /jOT TU_B__MONTH................... *8 NSW^QUIFMENT .....................114 INDEX TO ADVERTISERS............. 194 Copyright, 1646, by W. B. C./nmith Publishing OeapSby NIMaiba WbTt7:0T 06, 9T IDO A? Wt - Section thrpagk will' sjgP3,'';tV'exHuilr thawing new FU....V *-- -''^**I'i1 J'-. "tKhhrobu,,drt"dbkftdinn.tektel with tombustion i i FMMcn tvctM *u,rrm w Mints, miwets, ramniza ron ststens md stows; urn mraiwim, ceoMMizm m mi hatiis J02/TT'd SOUTHERN POVfiMcriya' wusF*: 01* esrsTiDO 1** ' Vi MOM beitesi than eve* In 193S the C-E Raymond Bowl .Mill came into the iteatmpower field with design and operating ad* vantages that revolutionised previous concepts of coal pulverisation. It had a wide capacity range. It handled wet coal with great facility. It was rugged, accessible and easily maintained. The mill ran quietly and power consumption was low. In consequence, the Bowl Mill won immediate and widespread acceptance among plant engineers -- more than a million lb pr hr of grinding capacity was ordered within five years. Today, the Bowl Mill with all of its initial ad* vantages, offers several new improvements, among which the following are of major Importancet O Flat-Bottom Bow! -- increases the response of the mill to load changes by eliminating any inactive area where coal can remain in the mill; also avoids any tendency of heavy, abrasive materia! such As pyrites, to accumulate In the bottom of the bowl. Q The Whiner Wheel -- a new exhauster wheel design which greatly increases the life of exhauster blades. A shrouded wheel carries heavily constructed "whiner" blades which bypass a por tion of the air-coal mixture directly to the exhauster outlet. In service this has doubled the life of exhauster blades -- in some cases more than doubled it Q New, Wear.Resisting Materials -- are now being used for ex* hauster liners and deflectors, resulting in greatly increased life of thesC parts. O Center Feed -- where conditions permit, larger Bowl Mills can now be arranged for center feed which assures a freer flow of coal to the mill and serves to equalise wear on grinding parts. Thus 1946 finds the C*E Raymond Bowl Mill, after more than 10 years at the top of its field, still adding refinements in design and materials that make it better than ever before. 40% of all Bowl Milli purchased to date are Repeat orders OB' A-977 ERGIREERIng BOO MADISON a v e n W B , n s n v n h e t* . m . 02/It'^ERN POWER & INDUSTRY for NOVEMBER, 1946 NIMCnbH Wbt>:0T 06, 9T 130 15 GaRLOOS 140 Spiral paeH*f, HIiiInM, Coil--Oarlock 1U SinpfOtMMXW Low in maintenance cost because it gives such long, dependable service. Costly shut downs for frequent repacking are avoided. Man hours and machine hours are saved. Use Garlock 150 on piston rods of engines, pumps, compres sors, etc., against steam pressures up to 800 lbs. The Garlock Packing Company, Palmyra, New York b Canada: The Garlock Padtloj Company of Canada Ltd., Montreal, Que. 4 *1 l, H ^SOUTHERN POWER ft INDUSTRY for NOVEMBER, 1946 NIMCTIdH Wdt't'iBT 06, 91 130 27 Industrial Hygiene Importance of Dust By N. V* Hendricks Chief Engineer Industrial Hygiene Service, Georgia Department of Public Kaalih IVearly Mil types of modem industry ore concerned t df+ dtwtf wil v U vl 01 CvWmj K. B. A. Co. fi. i. thc midoct iMPiNon uscd for eoLitoTtNo ATMSs. tlate between the FNSmO DUST SAMniS. origin of these materials, a defi nition of them is In order. THE annuel cost to industry DUSTS are formed by the re from uncontrolled dust duction of earthy materials and amounts to a staggering figure. Inare usually produced by such ope many cases the problem of dust is rations as crushing, grinding, dismissed by management as only buffing, etc. The particle size of a nuisance. In other plants, the dusts may vary considerably, recovery of certain dusts is eco ranging from sub-microscopic to nomically sound, especially where visible. the particulate matter may con FUMES are formed by conden tain precious metals or may carry sation and sublimation. Chemi valuable processing stock. Aside from any nuisance or economic loss resulting from the escape of dust there are certain dust ex posures which may result In acute health hazards. This la especial cally, they are metallic and are usually the oxides of such metals as zinc, and lead. The particle sice is usually below one micron. Smoke comes from the burning of organic material and its par- ly true of dusts containing a high tide size is usually less than one- Percentage of free silica, asbestos, half micron. or other toxic materials. Where Mists and Fogs result from the health considerations are involv condensation of water vapor on 'd in such exposures, legal aspects suitable nuclei, and the particle Present themselves. In most states size will vary with given con *here occupational diseases are ditions. compensable, specific coverage is Sven to those disabilities reault- 7 from the inhalation of silica dust, General Properties As a substance is reduced in particle size, there are certain Definitions Many times true dusts are conlused with fumes, smokes, mists, general properties of the material which are changed. On breaking up a solid into finely divided par ticles, the surface area is greatly lnd fogs. In order to differen- enlarged and therefore the space occupied is greatly increased. As an example, a piece of quartz one centimeter on each side when crushed to where the particles of one micron in size will present a system containing Iff* number of particles. The total surface area will be 6 square meters. If these dust particles are dispersed onto the atmosphere in such manner that the concentration will be 100 million particles per cubic foot, the space occupied by this dis persed system will be 10 thousand cubic feet. The chemical activity of a solid is considerably increased by a reduction in particle size. Thus the rate of oxidation is Increased as is evidenced by occasional dis astrous dust explosions. The phe nomena of adsorption becomes more important as gases are more easily adsorbed on the surface of the smaller particle. From the standpoint of health hazarda resulting from dust ex posures, the physiological proper ties of dust vary Bomewhet with the particle size. It is an accepted fact that with exposures to silica dust, the smaller the particle size, the greater the hazard, Physiologic*! Response Drinker has summarized the re actions resulting from the inhala- SUTHERN POWER ft INDUSTRY for NOVEMBER, I94t 02/fc-T -d 61 NIMCTIbia NySf:0T 06/ 9T 130 tlon of dust by classifying the re sponse into four groups. These ere: (a) Pneumoconiosis--The dusts producing this type reaction are harmful only when inhaled. The principal materials producing this type reaction are free silica end asbestos dust On inhalation, these two materials produce specific lung pathology and from the standpoint of disability, present the most important of the dust ex* posures. (b) Toxic Reaction--(As poison* ing by lead, cadmium or radium) These materials produce harmful effects when taken into the body both by inhalation and ingestion. With reference to lead and its compounds which may be present in the atmosphere as particulate matter, it has been fairly well established that entrance into the body oy inhalation is more im portant mode of entry than the same material taken by mouth. This is primarily due to the fact that when such materials are tak en into the body by inhalation, the major portion is taken into the blood stream, whereas, a consider able pert of that taken by mouth is removed by certain organs of the body. <c) Metal Fume Favors .These conditions result from the inhala tion of finely divided fume par ticles. The importance of metal fume fever has been brought to the attention of industry by the great amount of welding which has been an important industrial tool for the past few years. Where burning or welding U done on sur faces which have been galvanized, the problem of metal fumes be comes Immediately important. fit. t THE ELECTHOSTATIt) PSEOIFITATOH AO USES FOH COLLECTING ATMOS PHERIC SAMPLES OP BUST AMD FUMES. INSEAT SHOWS SATE OF SETTLING OF OUST, i l`V f). 'c <?&w 1 :r :l \ -3 \ 1V \ l, \ -1 v 1l This 1$ also a problem In foundries i where the pouring of brass done. <n id) Allergy--This type reaction is in general produced by pollen'1 and certain organic dusts. Common Industrial Ousts .* Carbonates are usually combin- * ed with either calcium or mag- * nesium. They normally occur b'& nature as oaldte and magnasite'l or as dolomite, which contains both magnesium and calcium as" the carbonate. Limestone end marble contain considerable amounts of these carbonates, as do the materials from which ce-,'| mentis made. Due to the solubility in body I fluids, these materials are retnov- f ed when taken into the body by f inhalation. The presence of car-. bon dioxide in such fluids is an ' important factor influencing their ( solubility. The same thing applies - to the presence of carbon dioxide `1 in water which comes into contact with these materials. In the pres- $ ence of carbon dioxide the car- '* bonate is converted to the more 2 soluble bicarbonate, thus adding ; to the ease with which it is retnov- ^ ed by solution. , Experimental and practical ob- 3? servatlons on carbonate dust in- * dlcate that these materials are not ; harmful when taken into the body ; by inhalation. This is probably ; due to the fact that they are eastl? tuwcd due to wieir soiunuity. " Sulfates are common Industrial materials and this general class r. may he Illustrated by gypsum, f which is calcium sulfate. This is & a common material and is widely * used in many Industrial opera- ; tions. It Is generally considered A that this type material la non-tox- | ic and does not present any par ticular problem standpoint. from a health T ii Oxides vary considerably in their physiological reaction. In general the nature of the reaction will be dependent on the type metal from which the oxide is de rived. Where such metals are specifically toxic, as would be the case with arsenic or lead, a spe cific toxic'reaction could be ex pected from the inhalation of the oxide. However, other oxides ap pear to be relatively harmless, particularly where the metal is of a non-specific type. This is true of iron oxide. The mining of iron results in the exposure of a great number of men to the oxides erf n. 02/ST'd SOUTHERN POWER ft INDUSTRY for NOVEMBER. 194* HiManua wtet^oi 06/ 9i ido MS. t, SfORGIA KASUN DUST KAORfMDAtlON (MX. this metal. However, it appears that exposure to the dust of iron does not produce pathology un less such exposure is accompanied by the pressure of free silica. The mining of coal results in exposure to coal dust which con tains a high percentage of carbon. Detailed studies of exposure to coal dust have been made by the U. S. Public Health Service and other agencies. It has been found that, in general, coal dust is re tained in the lungs only when such dust contains a high per centage of free silica. Although coal dust may be deposited in the lungs of exposed individuals, the condition resulting is usually not considered disabling unless silica is present Silicates make up an important class of industrial materials and are used principally In the pro duction of ceramics and similar materials. Talc, kaolin, mica, clays, etc., are chemically silicates and their widespread industrial ap plication results in a great number of employees being exposed to this type dust. With the excep tion of asbestos, which is a silicate, this general class of materials does not appear to produce a disabling condition, except in isolated cases, when taken into the body by in halation. Asbestos is the only silicate known at the present time which produces a lung pathology com parable with that resulting from exposure to sflica dust. Of all the dust found In indus try, probably the most Important fnm iIIIm na alliwei ti occurs in the form of quarts, flint, sandstone,. and chert; and is te ns. 4. QUARTZ DUST (SI 0,) MASMMCA. TlON IMX. sociated with many other miner als and ores. The disabling con dition resulting from the inhala tion of free silica Is known as silicosis and has long been a problem with Industries such as stone cutting, granite, foundry, abrasive, and the like, where sili ca is used in processing. There are relatively few industrial ope rations which might result in di rect exposure to pure silica dust. The importance of silica lies in its association with other materials. As an example, in foundry opera tions the dust generally will con tain clay and materials of a nonsilicious character, so that the ac tual percentage of free silica may be relatively low. This is also true in exposures to coal, iron oxide, and the mining of ores. When hard rock or silica is present, these dusts become important mainly due to the presence of silica rather than to the inherent properties of the parent material. Factors influencing Hasardx In evaluating the exposure to a dust there are several factors which should be taken into con sideration. The duration of ex posure is important, as it will in dicate in a general way the total amount of dust which might be expected to have entered the body. Obviously other factors enter into such an evaluation of total dusti ness, and these will be discussed later. History, of past exposure is important. This is particularly true where an individual is ex posed to silica dust. This point is I e--ivenne Hnpsrteike lv due to the fact that a worker may have contracted silicosis under a MG. I. CAieiUU QARBONATI DUST DAfl. himcattor izbx. previous employment Where such a condition exists, the desirability of preemployment examination is obvious. The concentration of dust breathed Is important as this, within certain limits, will deter mine the possibility of develop ment of dust diseases. Consider able research and practical obser vations have been made in the field of dust exposures to corre late clinical findings with atmos pheric concentrations. For free silica, asbestos, and some of the other materials, fairly definite standards have been established. The nature of dust is Important primarily from the standpoint of free silica content. This is par ticularly true of mixed dusts which constitute the majority of industrial exposures. The volume of air breathed enters into the picture as it directly influenc es the amount of dust which will be taken into the body. The rate of respiration or amount of air breathed in general will be de termined by the phyalcal effort required on the particular job. Where heavy work is being done, naturally an individual will re quire more ventilation than where less physical effort is involved. Dual Measurements In addition to the factora in fluencing dust hazards, it is neces sary to make direct dust measure ments in older to obtain a true evaluation of any dust exposure. Such measurements are made by the actual collection of dust sam ples, uie counting or uie dust partides, and by the identification of the materials making up the dis- SOUTHERN POWER & INDUSTRY for NOVEMBER, IW6 02/9T`d 63 NiMaiya mip-.bt 06, 9t 100 persed system. For the collection of dust samples, several instru ments may be employed. Much of the early work done on the control of silicosis In the mining areas of South Africa was carried out with the Konlmeter. This instrument has been used some in this country, however, it has not met with the popularity whether it be merely a nuisance value or health consideration. To most industrial hygienists, 50 mil lion particles per cubic foot is the maximum atmospheric concentra tion of dust under which an em ployee should work. It should be pointed out that the only way of determining both the nature of the dust and the actual concentration two 15-foot fans are installed: which handle 500 thousand cubic feet per minute each. Actually, the material removed by these fans is made up principally of smoke rather than true dust. Two electric arc furnaces are operated and these are equipped with roof fans located immediately which is enjoyed by certain other is by direct sampling and similar above the units. These fans handle methods. From the standpoint of collecting efficiency, the electro static precipitator is probably the choice instrument, however, most of the work done on correlating atmospheric dust concentrations with medical findings has been based on samples collected and counted by the Greenburg-Smith technique. The collecting device employed is an implnger unit which samples at the rate of one cubic foot per minute. Counting by this technique is done under light field. The per centage of free silica In a dust sample is usually determined by either chemical or petrographic procedures for the counting of 00 thousand cubic feet per minute dust. each. Again, the major portion of Case History the material coming from the arc furnaces is smoke rather than true MANY industries having prob dust, and comes from the alloy lems of dust control recog and flux material charged into the nise the existence of such problemfusrnaces, to varied degrees. Some take pass A problem of dust control in any ive attitudes, while others apply foundry is the shakeout operation. sound engineering procedures This is particularly true where which result in a real Job of dust shakeout is mechanical and control. Such modern engineering handled on a vibrating screen or m^hods are used by the Le- grate. Here, a line conveyor sys Toumeau Company of Toccoa, tem is used to bring the castings Georgia. directly to the shakeout grate. A This particular plant manufac canopy type hood is installed im tures heavy road grading equip mediately over the grate Itself. In methods. ment and its major dust problem addition to canopy, side enclosures Permissible concentrations of lies in operation of a foundry for are provided which prevent air dust havp been established for the protection of basic steel parts. leakage. The fan serving this hood free silica,'asbestos, and other ma It is interesting to note that this delivers 35 thousand cubic feet per terials. For both silica and asbes Company considers the control of minute, which results in a high tos, 5 million particles per cubic dust as a part of the general over capturing velocity at the entrance foot is considered as maximum working concentration. The U. S. Public Health Service has suggest ed a procedure by which the total dust concentration in millions of particles per cubic foot Is multi plied by a percentage of free sili ca. If the resulting figure is more than 3 million particles per cubic foot, the condition is considered all production schedule and as a result has its control methods inte grated into general plant opera tions. Although there are several methods which can be used for control of dust, ventilation, both in the form of general and local exhaust, probably offers the most and discharge ports. An excellent job of dust control results on this particular operation. Sand conditioning in many foundries is a dusty job. With the LeToumeau Company this is Vi handled by means of local exhaust ventilation and three bag type fil ters handling 8 thousand cubic feet unsafe. If less than 5 million, the satisfactory method and it is this per minute each, Tumbling opera condition is considered safe. There approach which has been used by tions for cast cleaning are also pro should be considered certain limits the LeToumeau Company, For vided with local exhaust ventila- of dustiness for any type of dust, general ventilation in the foundry, (Continued on page 80) } ill 4 SOUTHERN POWER t INDUSTRY for NOVEMBER, 1948 0 Ninaiya W6t>:0T 06, 9T ido and unburned fuel has also been found in stoker-fired boilers. At the time of each shutdown for cleaning and preventive main* tenance (at least once every four months), all areas vulnerable to erosive attack should be examined. Areas most susceptible are*. . I 1. Where, flow of gases makes a turn, throwing out particles of V Solldk ` ' 1 ' ` 2. Behind any cracks, breaks, or y ' actpOf Iti sag oeine.. , 3 Adjacent to any! projection that might divert normal flow' of gases. at least 75%. Figure 8 shosys.the , .Should the boiler be provided condition, of the tube that JPaliad; , with an induced draft fan, observe Other tubes were found eroded the condition of the blading. Ab adjacent to U bolts holding baffle normal wear may be indicative of tiles. The U bolts provided suf erosive attack in the boiler. ficient interruption in 4aa flow to Careful attention by all engi cause eddy currents aiifd localized neer to the problem, of erosion impingement. (Fig. 3,). may well prevent a serious acci Erosion by particles* of fly ash dent. in the plant. w The modernization program of the Brock Candy Cbmpaijy is tak- ing place at a time when almost > any product, regardless of quality 'Y or cost, can be sold. Tne real bot. v tlenecks today are shortages of raw ' , materials and skilled personnel. fJ However, progressive businessmen i know that these conditions are j only temporary and that within a v few VPA1-S ...uj-u ----- | not guarantee quality will not be i able to sell their products. The {? Brock Candy Company will eon-f1' tlnue to be a leader in its field be- ! cause it has refused' to sacrifice } quality of its products in these;' days when consumer demands are y greater than the supply of raw ma- ; terials and because it has already inaugurated a program of control : and research which will result In ; constant improvements. Dust Candy Making (Continued from pipe 60) not be taken for granted, a chemi cal laboratory is essential. .. The Brock Candy Company is now in the process of constructing a modern chemical laboratory and training a technician to perform control analyses. The laboratory, which is located In a large air con ditioned room near the candy1 cooking operations, Is equipped with modern stone-topped labora tory benches, the latest chemical glassware, and such special analyt ical Instruments ., as., balances, vacuum oven, refractometer, and pH meter. Provision has been made for such analyses as moisture, in vert sugar, viscosity, pH, melting point, Bnd refractive index. Many of the control tests have ,beeri de veloped specifically for the Brock Candy Company, and new pro ceduree will be added from time to time as the need arises. The Industrial Research Institute of the University of Chattanooga has cooperated. with the Brock Candy Company in selecting the equipment, outlining and develop ing. analytical procedures, and training a technician to operate the control, laboratory. A research project on Improvement of the quality of candy has been sponsor ed by the Brock Candy Company at the Industrial Research Institute of the University of Chattanooga. Since all raw materials will be analyzed and tested in the com pany laboratory, variation In prop erties will be detected before the material is used. This procedure will assure products of uniform quality, since inferior raw ma terials will be discarded and form ulations will be based on the ac tual analysis of high grade raw materials rather than on standard procedure which do not make al lowance for variation in the in gredients. Analysis and testing will assure high quality of finished products and permit any difference in quality to be detected. In this wey, any unavoidable errors in manufacture can be corrected and adequate controls instituted to pre vent their reoccurrence. The facilities of the control lab oratory will also be available for the evaluation of research and de velopment work being carried out in the factory. In addition to main taining the production of uniform high quality products, the person nel and equipment of the control laboratory will be available for many other technical, assignments (Continued from page 64) tion and dust arrestors as is shown in the photograph. Note that ex* haust Is applied through the trunnion of the tumbler. In foundry operations or any other Industrial type processing, housekeeping Is an Important fac tor Influencing the generation of dust. This foundry employs two five horsepower vacuum cleaners for floor maintenance. By this pro cedure loose dust, sand, and the like, is removed from the floor and is not projected into the atmos phere by the movement of ma chinery, scuffing of feet, and the like. This is one impressive point in the operation of this particular foundry. Excellent housekeeping is combined with a good procedure for materials handled. In all of the attempts at dust con trol at the LeTourneau Company, employee cooperation is obtained. Employee cooperation comes through planned program of em ployee education and employee participation in affairs involving the health of the worker. Periodic dust samples collected in the LeTourneau foundry Indi cate atmospheric concentrations on various operations well below what is considered as maximum safe working limits. 60 02/8T'd SOUTHERN COWER & INDUSTRY.NOWURgo i*tt NIMCnua Wd0S:0I 06' ned into 'Ough it. nmodate' !er feed.' Hpot av \ ^circula- j perature; 'e pump ' cycle, 1 heater > mp and. , (, there- | a tern- than( by-pa$s, ^ heat ex- conden-, rom the S this a dl- .. . that's why industry relies on J-M Insulations applied by J-M Applicators! IMPS is per-pass '-if.t \ Good Insulation alone 1$ no guarantee of top foe! savings. To cut down heat waste and to keep on cutting it dawn through years of service, insulation must be properly applied. That's whereJohos-Maovilla can help you. J-M Insulation Engineers, and the facilities of the J-M Insulation Research Laboratory, are available to help you with specific prob lems, no matter how simple or complex. The J-M industrial insulation line offers a carefully engineered material for every service... for every temperature from 400* F below zero to 2800 F above. And you have positive assurance of proper application because J-M Insulation Applica tors know exactly which material is right for each service,, .know howto apply it for great est economies at installation and throughout years of service. For details, write your nearest J-M Insula tion Applicator, or Jobos-Maavuie, vjgmm Box 290, New York 16, New York. ll.TI JOHNS-MANVIlti SUMMONS 1946 02/P6TTdERN POWER & INDUSTRY for NOVEMBER, 1446 tsIIMQlba WbTS :0T 06. 9T 130 71 Wal s made< ifficuU liquid V Thij fvalv seating th com-? >iiity to Ive de tod sec-1 ith con-3 cess. -m doe*' itble to] a long] be pertenancel reezing i of the where can be unding :'jf ? Orim eel off hstand ,| \ >nly In e from During olated mted _ by jnt of r.A.) d on rove iges, the :lass intag`een ing II>46 Users applaud the high Rust-Inhibition of Eagle Super "66" Insulating Cement Men who have used Eagle Super "66" Insulating Cement are enthusiastic not only about its great fuel-saving ability -- they applaud the way Super "66" actually inhibits rust on heated metal equipment! This unique rust-inhibit!ve quality has been conclusively proved by labo ratory testa, and in actual use, It's an important factor in prolonging the life of boilers, ovens, tanks, towers, heat exchangers, etc. 3friiaBstr' "Springy Ball" structure gives remarkable efficiency Sima** The tremendous insulating efficiency of Super "66" conies from its "Springy Ball" pellets of Eagle Mineral Wool. Each pellet is a maze of dead air cells--one of Nature's most effective barriers against passage of heat. "Springy Ball" structure is permanent ''lasts as long as the insulation. Eagle Super "66" withstands a full range of temperatures up to 1800* F, If not subjected to temperatures above 1200* F,, it can be removed, remixed and refused/ An all-purpose Insula, tion, it can be troweled with little effort on almost any size or shape surface. Wbt coverage ia as high as 65 sq, ft. per 100 lbs., 1 in. thick,.. and shrinkage is less than 15%. Send for data sheets. They contain complete technical information about Eagle Super "66". Available on request. Other Eagle Industrial Products Include: Cagle Insvlseol. A protective coating for insulation. I rowels on --dries to a hard finish. Withstands temperatures up to 430* F. ' i Eagle Swelehek (black), A prepared, asphaltic base, rust* inhlbltlve anti-condensation compound. Eagle "43" fmhhlng. Cement. A hard white finish coating, for all types of Indoor insu lation within a range from 70* F. to BOO* F. EAGLE-PICHER INSULATIONS ^ High and Low Temperature ] JHI lAOIE.PICKIR COMPANY CINCINNATI [1J, OHIO Eaglt Soptr "M" Inwlotltg Ctrntsf Eeglt l*T and M.J flt Eeglt Supertemp WetV Eeglt Elonktti Eeglt Pip# Covering Eeglt Ituvluel Eeglt loos* Woel Eogl* InivliHc legit Swtfshtk SOUTHERN POWER & INDUSTRY for NOVEMBER, 1946 --02/02' d________________ 95 NIMCTIbH WbTS:0T 06. 9T 130