Document 61V0brLxpRxgmE48971enE3E

r"PKBB? 11 EXHIBIT If ?rniza3; T>men? onsnlt^| uggestpquip.. nts in 'ny. in the. ialists. . ? vice m 'lations^ neers; in re-T' by in- or by" ilities^ ' lipped -steel neries,. retera/ 1 boiler*. special*. VELAND .id VMtMW j, iifS " 'rjll I s -R, 1946- *& | Eugene W. O'Brien Managing Director Francis C. Smith, Editor Hunter R. Hughe*, Jr. Associate Editor Rtcherd L. Prie** ^outhwertern Editor W. E. CoogW Production Manager Butrneu Ripr*fnfetfr*i S L. Rogers. 19 East 48th 8t.. Room 1904. New York 17. N. Y.--Phone. Plata. 8-2585. tvilUam K. Hoffman, 28 Bowdoln St.. Maplewood. N. J.--Phone So. Orange 2-2484. Mayoard L. Durham. 6? Coding ton Road. Buffalo 18. N. Y.-- Phone. Amherst 6332, ' a E. C. Smith. 206 Auditorium Bunding. Cleveland 14. Ohio --Phone. Cherry 7352. 0. E. Johnson. 168 North Michigan Are.. Chicago 1. HI.--Phone. Central 4131. L B. Chappell, Auditorium Bldg427 west 5th St.. Loa Ange les. Call/. -- Phone. Tucker 6363. Richard L. Pries*. 1341 Liberty Bank Bldg.. Dallas. Teiaa.-- Phone, Central 7673. Annual Subscription__ $1.00 Canada--*1.50; Foreign *2.00 Publithtd Monthly by w R. c. SMITH PUBLISHING CO. Publisher algo of : Cotton, Eire`pi-at Rout*, Southern Honivjarr, outftem Automotive Journal. Southern RuU.Ung Supplier. Rooke. President; R. smith. Executive Vice-Presldei T McAllister. Vlce-Presldei r i9- O'Brien. Vice-Presidei j C. Smith. Tiee-Presidei 4. C. Cook. Vice-President: 0. - riArpioss, Treasurer; APR S.-rretary. Ediioriol -nd Bineutim OHicot grant building ATLANTA. GEORGIA CONTENTS Mechanical Handling of Cross-Ties, by A. M. Deiters........................... 40 A Good Lunch Help*, by Francis C. Smith.................................. ... 46 Profits in Plant Layout, by Gregory M. Dexter....................................49 . -# Progress in Candy Mating, by R. A. Brock and F. W. Hayward . 58 Hygienic Importance of Dust, by N. V. Hendrick*............................ 6! Centrifugal Boiler Feed Pumps, by Igor J. Karassik . . 65 Labor Turnover, by Philip Panfield .......................... 74 Damage by Fly Ash Erosion, by Harry M. Spring . . . 78 Electric Circuit Troubles, by Thomas Trail........................................... S4 A History of Power, by Carl J. Eckhardt, Jr. . . . 86 PRACTICAL DISCUSSION Routing Operation Improved............... 92 Tight Bolt-Threads .................... . 9* Magnetic Street Cleaner........................92 Ladder Alda Maioteoenre . . 94 Simple Air Manifold................................. 92 Preeiieg Aids Repairs ... 94 Reading Meters and Gauges .................... 94 DEPARTMENTS TACTS AND TRENDS............................... 5 INDUSTRY SPEAKS............ BUYERS' INFORMATION........................ 8 NEWS OP TBS MONTH. TIMELY COMMENTS......................! ... 37 NEW^XOUIPMENT.............. INDEX TO ADVERTISERS................. 134 Copyright 1946. by W. R. O./Hmlth Publishing Company 3 At Ml -- Steitai through mull axhautter shotcing mate throudad fan tahael with ' "teAixier" bladet. i 0 BUSTIOH t i mihcts tKinc all ttks if mile** rmmiets, wlwwzeb mi srsms ato stoke** also sskmutob. ecokomizers am air heaths U SOUTHERN POWER & INDUSTRY for NOVEMBER. betted than web n NEATBB tMBER,' In 1935 the C-E Raymond Bowl Mill came into the steam-power held with design and operating ad vantages that revolutionized previous concepts of coal pulverization. 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 importance: O Flat-Bottom Bowl -- 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 material such as pyrites, to accumulate in the bottom of the bowl, The Whizzer Wheel -- a new exhauster wheel design which greatly increases the life of exhauster blades. A shrouded wheel carries heavily constructed "whizzer" 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. New, Wear-Resisting Materials -- are now being used for ex hauster liners and deflectors, resulting in greatly increased life of these parts. Center Feed -- where conditions permit, larger Bowl Mills can now be arranged for center feed which assures a freer Bow of coal to the mil! and serves to equalize 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 Mills purchased to date are Repeat orders A-977 engineering 3 00 MADISON AVENUE, NEW YORK 16, N . Y. SOUTHERN POWER & INDUSTRY for NOVEMBER, 1946 is 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 Gablock 150 on piston rods of engines, pumps, compres sors, etc., against steam pressures up to 800 lbs. The Garlock Packing Company, Palmyra, New York Garlocx 150 Spiral packmg. illustrated. In Canada: The Garlock Picking Company Coil--Oarlock 125 of Canada Ltd., Montreal. Que. ! tooGarlocx I SOUTHERN POWER & INDUSTRY for NOVEMBER, 1944 27 Industrial Hygiene Importance of Dust By N. V. Hendricks Chief Engineer Industrial Hygisne Sereiee, Georgia Department of Public Health Nearly all types of modem Industry are concerned .tdth dust and Us control Comm M. s. a. Co. no. i. thc midoct iufinoek utto fob covLicriKa atmos. fhsbic oust samflis. tiate between the origin of these materials, a defi nition of them is in order. THE annual 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 cally, they are metallic and are from any nuisance or economic usually the oxides of such metals loss resulting from the escape of as zinc, and lead. The particle dust there are certain dust ex sue is usually below one micron. posures which may result in acute Smoke comes from the burning health hazards. This is especial of organic material and its par- . 1? true of dusts containing a high tide size is usually less than one- 1 Percentage of free silica, asbestos, half micron. I or other toxic materials. Where Misit and Fogs result from the health considerations are involv condensation of water vapor on ed 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 f>iven to those disabilities result General Properties 's from the inhalation of silica dust. As a substance is reduced in particle size, there are certain Definitions Many times true dusts are cont\i*ed with fumes, smokes, mists, ind fogs. In order to differen general properties of the material which are changed. On breaking up a solid into finely divided par ticles, the surface area is greatly 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 10* 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 hazards resulting from dust ex posures, the physiological proper ties of dust vary somewhat with the particle size. It is an accepted fact that with exposures to silica dust, the smaller the particle size, the greater the hazard. Physiological Response Drinker has summarized the re actions resulting from the inhala- ^UTHERN POWER & INDUSTRY for NOVEMBER, 1946 61 tion of dust by classifying the re sponse into four groups. These are: (a) Pneumoconiosis--The dusts producing this type reaction are harmful only when inhaled. The principal materials producing this type reaction are free silica and 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 part of that taken by mouth is removed by certain organs of the body. . (e) Metal Fume Fever*--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 is done on sur faces which have been galvanized, the problem of metal fumes be comes immediately important. no. t. THE ELECTROSTATTC RRCCIRITATOR AS (/SCO EOS C0LLECTIN8 ATMOS. RHCRI6 SAMPLES Qf OUST AMO FUMES. INSERT SHOWS RATE OR SETTLING OR OUST. Thi*s *is also a problem in foundries where the pouring of brass done. fj* (d) Allergy--This type reaction^ is in general produced by pollen * and certain organic dusts. i* Common Industrial Dusts Carbonates are usually eombin. 1 ed with either calcium or mag. f nesium. They normally occur in y nature as calcite and magnasite * or as dolomite, which contains r both magnesium and calcium as R the carbonate. Limestone and * marble contain considerable 1 amounts of these carbonates, as , do the materials from which ce ment is made. ^ Due to the solubility in body 'z fluids, these materials are remov- ed when taken into the body by ` 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 in water which comes into contact with these materials. In the pres ence of carbon dioxide the car- i bonate is converted to the more } soluble bicarbonate, thus adding to the ease with which it>is remov- ,, ed by solution. Experimental and practical ob servations on carbonate dust in- " dicate that these materials are not harmful when taken into the body by inhalation. This is probably . due to the fact that they are easi ly removed due to their solubility. Sulfates are common industrial materials and this general class may be illustrated by gypsum, which is calcium sulfate. Tills is a common material and is widely used in many industrial opera tions. It is generally considered that this type material is non-tox ic and does not present any par ticular problem from a health standpoint. 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 of 61 SOUTHERN ROWER & INDUSTRY for NOVEMBER, 194* ttfl. J. BtORCIA KAOLIN OUST NAflNIftCA. TtON lX. Pie. 4. QUARTZ OUST (SI 0,) ASNtriCATI0A ISOX. PIQ. I. CALCIUM CARBONATt OUST MABIfICATtO* (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 silica -dust. Of all the dust found in indus try, probably the most important free silica or silicon dioxide. It occurs in the form of quartz, flint, sandstone.. and chert; and is as- 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 Kaaards 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 of extreme importance to industry due to the fact that a workermay have contracted silicosis under a 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 physical 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. Dust Measurements In addition to the factors in fluencing dust hazards, it is neces sary to make direct dust measure ments in order to obtain a true evaluation of any dust exposure. Such measurements are made by the actual collection of dust sam ples, the counting of the dust par ticles, and by the identification of the materials making up the dis- SOUTHERN POWER & INDUSTRY for NOVEMBER. 1946 63 persed system. For the collection whether it be merely a nuisance two 15-foot fans are installs of dust samples, several instru value or health consideration. To which handle 500 thousand cubic ments may be employed. most industrial hygienists, 50 mil feet per minute each. Actually, Much of the early work done lion particles per cubic foot is the the material removed by these tans on the control of silicosis in the mining areas of South Africa was carried out with the Konimeter. This instrument has been used some in this country, however, it has not met with the popularity which is enjoyed by certain other methods. From the standpoint of collecting efficiency, the electro static precipitator is probably the choice instrument, however, most 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 is by direct sampling and similar procedures for the counting of dust. Case History 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 above the units. These fans handle 60 thousand cubic feet per minute each. Again, the major portion of the material coming from the arc furnaces is smoke rather than true Mof the work done on correlating atmospheric dust concentrations with medical findings has been ANY 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. based on samples collected and counted by the Greenburg-Smith technique. The collecting device employed is an impinger unit which samples at the rate of one cubic foot per minute. to varied degrees. Some take pass ive attitudes, while others apply sound engineering procedures which result in a real job of dust control. Such modern engineering methods are used by the Le- A problem of dust control in any foundry is the shakeout operation. This is particularly true where shakeout is mechanical and handled on a vibrating screen or grate. Here, a line conveyor sys Counting by this technique is Tourneau Company of Toccoa, tem is used to bring the castings done under light field. The per centage of free silica in a dust sample is usually determined by either chemical or petrographic methods. Permissible concentrations of dust have been established for free silica, asbestos, and other ma terials. For both silica and asbes tos, 5 million particles per cubic foot is considered as maximum working concentration. The U. S. Georgia. ' - This particular plant manufac tures heavy road grading equip ment and its major dust problem lies in operation of a foundry for the protection of basic steel parts. It is interesting to note that this Company considers the control of dust as a part of the general over all production schedule and as a result has its control methods inte directly to the shakeout grate. A canopy type hood is installed im mediately over the grate itself. In addition to canopy, side enclosures are provided which prevent air leakage. The fan serving this hood delivers 35 thousand cubic feet per minute, which results in a high capturing velocity at the entrance and discharge ports. An excellent I'lYntml results on this Public Health Service has suggest ed a procedure by which the total grated into general plant opera tions. particular operation. Sand conditioning *in many s dust concentration in millions of Although there are several foundries is a dusty job. With the particles per cubic foot is multi plied by a percentage of free sili ca. If the resulting figure is more than 5 million particles per cubic foot, the condition is considered unsafe. If less than 5 million, the condition is considered safe. There should be considered certain limits of dustiness for any type of dust, methods which can be used for control of dust, ventilation, both in the form of general and local exhaust, probably offers the most satisfactory method and it is this approach which has been used by the LeToumeau Company. For general ventilation in the foundry, LeToumeau Company this is handled by means of local exhaust ventilation and three bag type filters handling 6 thousand cubic feet per minute each. Tumbling opera tions for cast cleaning are also pro* vided with local exhaust ventila- (Continued on page 80) * ' . ^ f FIO. I. UK*L EXHAUST OR TUROLCM FOR CAST CLCARlH. rifl. 7. *A MOUSE AHO SARD 8LAST UMIT 0* CAST CLEARIMO. SOUTHERN POWER 4 INDUSTRY for NOVEMBER, 1944 . : at least 75%. Figure 2 shows the condition of .the tube that Jailed; Other tubes were found eroded adjacent to U bolts holding baffle tiles. The U bolts provided suf ficient interruption in ias flow to cause eddy currents and localized impingement. (Fig. 3.) Erosion by particles^of fly ash and unbumed fuel has also been found in stoker-fired boilers. At the time of each shutdown for cleaning and preventitive main tenance (at least once every four months), all areas vulnerable to erosive attack should be examined. Areas roost susceptible are; . i 1. Where flow of gases makes a ' turn, throwing out particles of N solids. ' ` ' ' ' 2. Behind any cracks, breaks, or y gaps in a gas baffte.. : 3, Adjacent to any! projection that might divert normal flow of gases. Should the boiler be provided with an induced draft fan, observe the condition of the blading. Ab normal wear may be indicative of erosive attack in the boiler. Careful attention by all engineecs to the problem of erosion may well prevent a serious acci dent. in the plant. The modernization program of the Brock Candy Company is tak ing place at a time when almost any product, regardless of quality or cost, can be sold. Tne real bot tlenecks today are shortages of raw materials and skilled personnel However, progressive businessmen know that these conditions are only temporary and that within a few years, companies which can not guarantee quality will not be able to sell their products. The Brock Candy Company will con tinue 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 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. t Bast % Candy Making* (Continued from pige 60) not be taken for granted, a chemi cal laboratory is essential. The Brock Candy Company is now in the process of constructing a modem 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 modem 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, and refractive index. Many of the control tests have been de veloped specifically for the Brock Candy Company, and new pro cedures 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 i 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 way, 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 LeToumeau 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 LeToumeau foundry indi cate atmospheric concentrations on various operations well below what is considered as maximum safe working limits. 80 SOUTHERN ROWER & INDUSTRY for NOVEMBER, .1946 '^1--I *reo in I feet. t from e suemper?, plus ori- : , * f . OMPS hat is rper-pass * 1946 1 1 ... that's why industry relies on J-M Insulations applied by J-M Applicators! Good iosuladoo alone is no guarantee of top fuel savings. To cut down heat waste and to keep on cutting it down through years of service, insulation must be properly applied. That's whereJohns-Manville 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, oo matter how simple or complex. The J-M industrial insulation line offers a care fully engineered material for every service... for every temperature from 400 F below aero 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 bow to apply it for great est economies at installation and throughout years of service. For details, write your nearest J-M Insula tion Applicator, or Johns-Manville, Box 290, New York 16, New York. M...U - 1 T-J. JTOV J0HNS-MANVI1IE INSULATIONS southern power & industry for November, 194* 71 i 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-inhibitive quality has been conclusively proved by labo ratory tests, and in actual use. It's an important factor in prolonging the life of boilers, ovens, tanks, towers, heat exchangers, etc 'Sprint} Bill" "Springy Boll" structure gives remarkable efficiency Struaart The tremendous insulating efficiency of Super "66" comes from its Springy Ball" pellets of Eagle Mineral Wool. Each pellet i9 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 re-ueed! An all-purpose insula tion, it can be troweled with little effort on almost any size or shape surface. V/et coverage is as high as 65 sq. ft. per 100 lbs., 1 in. thick... and shrinkage is less than 159&* Send for data sheets. They contain complete technical information about Eagle Super''66". Available on request. Other Eagle Industrial Products include: Eagle Insulseoi A protective coating for insulation. Trowels on --dries to a hard fjnish. Withstands temperatures up to 450 F. ' i Eagle Swefchek (block). A prepared, asphaltic base, rust- inhibitrve onti-condeftsation compound. ' Eagle "43" Finishing Cement. A hard white finish coating for all types of indoor insu lation within a range from 70 F. to 800 F. EAGLE-PICHER INSULATIONS FOCLC High and Low Temperatore G3 ) 1946 TMS IAOIE-PICKEK COMPANY CINCINNATI (l),OHIO Eagle Super "66" Insulating Cement Eagle L-T and M-2 Felt Eagle Supertemp Work Eagle Blanket* * Eagle Pipe Covering Eagle Intvbeai Eagle Lease Wool Eagle Intwltlk Eagle SweteKek Southern power * industry for November, i?46 95