Document 5LndbRXe6rqGZ2Vb9Oa80JBb0

PLAINTIFF'S EXHIBIT ; / oPgetrloilieeumer PLAINTIFF'S EXHIBIT COMBINED EDITION|| OQVLd.OQ Drilling and Producing > Refining and Gas Processing Oil and Gas Pipelining APRIL 1952 VOLUME XXIV NUMSEK 4 GENERAL East Side of the Julesburg Basin................................ .A-49 _ R. JT. McCanne Yenter Pool .................................................................... A-61 W. K. Arbuckle South Dakota .................................................... -........ A-71 John Paul Cries Oil and Gas in Alabama.......... ....................................A-81 Walter B. Jones Features lourse of OilA-4 Fith the Editors_A-8 lighlights in Oildom__ A-10 Jtrolic Personalities A-12 Dick Sneddon tings _____ ________ K-14 oleum Profile _____ A-88 - . G. Skelly General News '_____ E-2 General Personals_____ E-12 The Petroleum Engineer's Continuous Tables___ E-19 (Installment No. 177) Laugh with Barney-------- E-26 Books E-28 Oil and Gas Trade. News E-30 Trade Personals E-38 New Machinery and Supplies E-53 Trade LiteratureE-57 DRILLING AND PRODUCING Modern Methods Revive McKittrick Lease............... B-7 William T. Rintoul Some Considerations in Selection of Sucker Rods ... B-12 Kenneth N. Mills Natural Organic Colloids of Iranian Origin as Mud Treating Agents.....................................B-45 George Tchillingarian and Carrol M. Beeson Installation of Pumping Unit....................................... B-54 Jack L. Coulson Petroleum Exploration and Development in France ............................................................... B-38 Dr. J. Dupouy-Camet Spraberry Drilling and Completion Methods.......... B-72 John L. Cox Oil Reserves Menaced by Mass Salvaging.................. B-78 F. R. Cozzens Geophysical Exploration Comesof Age......................B-84 Sigmund Hammer Current Mud Programs in the Uintah Basin....... ... B-89 R. D. Blaicher and William J. Knight The Lee Field, Morgan County,Colorado ................. B-92 C. R. Neal Cost Trends in Contract Drilling........................ ........._B-95 John McEwen '-rino Field, Colorado........................ ........................B-99 " Sets U. S. Oil Reserves Up Five Billion Barrels ............ B-101 Black Light Aids Oil Exploration............. ................ B-103 Features Presenting-------------------- B-3 Producing News _____ B-104 Tiat's Doing in Drilling-------------- B-108 Exploration Activities _.B-112 Running Tour With Men in the Industry_____B-118 REFINING AND GAS PROCESSING More Catalysis--Refining's Watchword........................ C-3 Arch L. Foster Heat Transfer in Spiral Coils ...'........................ --.....C-7 T" M. A. Noble, J. S. Kamlani, J. J. McKetta, Jr. Insulation Methods for Air-Lift TCC Unit................ C-22 5. E. Swenson Petrochemicals from Water Gas--Part 1.................. C-28 Peter W. Sherwood Salvage Cleaning ....................................................... --C-38 Vincent E. Bowes Cooling Tower Maintenance...........................................C-44 Howard E. Degler Relationship of Furnace Volume and Heat Release......-.................................. D. F. Gerstenberger -G-51 Hydrous Calcium Silicate Heat Insulation............ --C-53 E. C. Shuman New Analytical Methods--............................................ C-63 Polarographic Determination of Zinc in Oils How to Service Coolant Condensers Heater for Aniline Point Apparatus Processing Sulfur Bearing Gases....................................C-68 C. L. Blohm Insulating Cement--A Versatile Heat Saver............. C-75 TC Reforming Process Regenerates Catalyst............C-79 Michigan Refinerv Yields 35-40% Aromatics............. C-83 ----------- j. c. Albright y Plant Aida . Suspended Cellar Tar Heater C-81 Scaffold C-26 Crank Bearing Permanent Scaffold Clearance Gage Bracket and Boilers__ C-76 Support Bracket______ C-82 Automatic Water Stainless-Steel Paint___ C-82 Treatment Feeder___ C-81 Circular-Scale Micarta Piston Rings Design and for PumpsC-81 Full-V iew Dial C-82 Elimination of Excess Side Boom Used for Pump Packing _____ 'C-81 Loading PipeC-89 Features Refining and Gas Refining and Gas Processing News ____ C-84 Processing Personals__C-90 OIL AND GAS PIPELINING Cushing-Chicago Line Under Construction................ D-3 Frank H. Love Protective Casings for Pipe Lines.............................. D-7 .1/. G. Spangler PAD's Survey of Transportation Needs........................ D-24 Use of Aluminum Pipe in Oil Country Applications ...........................................................D-28 William B. Moore, Jr. The Wear-Compensating Pipe Line Scraper............. D-35 B. Ver Nooy Features Pictorial D-44 Oil and Gas Pipelining News ____ D-47 Pipe Line Personals____ D-57 Pipe Line Projects------------------D-60 With the Pipe Line Contractors _________ D-66 P** rtTROliUM ENGINEER Publishing Company, Irwin-Kooalar Building, DAL LAS 1, TEXAS. W. 1. LOVE, Pratidont; W. T. 81VAN, Ganorof Momjw and Trooturopy Editorial Staff--X. C. SCLATER. Viet Prat.danr and Editor-in-Cbi*/; ERNESTINE ADAMS. Managing Editor; JACK MENNEER, Editor. Drilling ond Producing! ARCH l. fOSTER. Editor, Satining and Gat Procoaling; PRANK H. LOVE. Editor. Oil and Gat Pipolining; RICHARD SNEDDON, Editor Politic Coait, 1106 I North lov'M Slroot. Glandolo 7, Colifornio. Phono, Chapman 5-1951, MART MORRIS IVMAN, Auitlont Editor; HENRIETTA O'BANNON, Art Editor. Advartlaing Staff--T. J. CROWLEY, Vico Rroiidonf ond Aduortiting Monogan Nov York--JOE I. WOOOS, 52 Vondnrbilt Avnnu*. Now York 17. Now York. Phono MUrray Hill 4-1880| Chlcogo--E. V. PERKINS. 53 Watt Jockton 8ld.. Chicogo 4. I Minot*. Phono HArrlisn 7-883; lot Angoloi--RICHARD P. MtKEY, Bandit Bldg.. 1206 South Maplo. Lot Angolot 15. California. Phono PEoipacf 3919. Promotion ABBOTT SPARKS. Monagnr; ROYAL COURTNEY, Auttfont Circuiatioo Monagot. Copyright 1952 by Tho Patrol*um n9*tmte Publithing Company. Jndatad by I nduilrlal Artt fndot ood Tho fnginaaring lodat, Inc. Mambar of Audit Buroou of Circulation and Attociafod iutinott Popart THE PETROLEUM ENGINEER, April, 1952 A-3 'Section of new addition to Port Arthur, exes, refinery of Gulf Oil Corporation, nutated with hydrous calcium silicate. A lways among the first to recognize and adopt improved materials and meth*s, the oil industry has quickly ac cepted a new heat insulation material of the hydrous calcium silicate type. A chemically reacted mixture of lime and silica, containing small amounts of asbestos fiber for hinging action, the new material looks quite similar to other rigid insulating materials commonly used in industry. It is not glass. In out ward appearance, its distinguishing characteristics are an almost chalky whiteness and a comparatively smooth surface texture, even when sawed. Properly made hydrous calcium sili cate is different from other insulating natenals now on the market because of its unique combination of physical characteristics. Although it has a den sity of only 11 lb per cubic foot, it has an average flexural strength in excess of 50 psi and a compressive strength of 150 psi. Insolubility in water and incom bustibility are two more of its outstand ing characteristics. It is effective through out the entire temperature range from zero to 1200 F. Because its thermal con ductivity is conservatively stated at 0.39 at 100 mean or 0.54 at 500 mean tem perature. it is frequent practice to specify %-in. less thickness for Kaylo insulation than for "combination" in sulating materials in the range from 500 to 1200 surface temperature. This new material is produced under Hydrous Calcium Silicate Heat Insulation Extremely light weight--11 lb per cubic foot--makes handling easy; Simplified Dimensional Standards facilitates nesting and application E. C. SHUMAN' patents numbered Re. 23,228, 2347,127, and other pending patent applications. Hydrous calcium silicate insulation has been used principally in the medium pid high temperature range, because it is in this range that the material per forms to greatest advantage. It may be used also as a low temperature insula tion, provided proper vapor seals are employed. Hydrous calcium silicate insulation products of certain types have been manufactured and,sold commercially by i >Dir*etor of rewareh. Karl* Division. Owen*- s tools Glui Componj. Owens-Illinois Glass Company since 1943. The story of how this company researched and developed the non-glass insulating material is interesting. It is also an inspiring example of the Ameri can Way. Without the vision, resources, and technical know-how of "big busi ness," this material would not be on the market today. Development of hydrous calcium silicate products began in 1938. The company wanted materials of construc tion to supplement its Insulux glass EXCLUSIVE E PETROLEUM ENGINEER, Apr/7, 1952 block, already well-established, and it had a great deal of manufacturing, and engineering experience with the "two principal markets used in hydrous cal cium silicates--lime and sand. Many other companies and- groups have experimented with various hydrous calcium silicate products. Work had been done in Germany in the early 1930's. Several independent research or ganizations and manufacturing compa nies in the United States and Canada had attempted to develop commercial materials during this period. One group was able to produce experimentally C-55 r> Chart of sizes, forms, and thicknesses of hydrous calcium silicate insulation. 056 limited quantities of a calcium silicate product which they called Microporite. It was a structural material, and there is an experimental house on Long Island today, which is built almost entirely of this material, except those parts that are exposed to weather. " Until the company's physicists, chem ists. and engineers studied the compo nent materials and learned the details of their reactions, however, no one had produced a stable, uniform product with the advantages now found in the hydrous calcium silicate. Research had reached the pilot plant stage of manufacturing by the outset of World War II. Hydrous calcium silicatf heat insulation, then being made at a- converted brick plant at Berlin. New Jersey, was approved by the U. S. Navy, which used it for marine insulation. Even in those early days, the material proved stronger, more durable, and easier to handle than others tested. After the War, construction began ' a quarter-mile-long manufacturing plant at Sayreville. New Jersey, and manufac turing of hydrous calcium silicate began there in March. 1948. The original plant at Berlin, New Jer sey, where the forerunner of today's hydrous calcium silicate heat insulation was first produced, has been remodeled and enlarged almost continually to be come a sizable and modern factory, from the outside looking much like a typical glass plant. The glassman who enters it, however, finds himself in strange sur roundings. The Sayreville, New Jersey, plant, al though little changed on the outside since its construction, has undergone extensive change within during the past four years as the company has perfected^ improved processes. THK MTROIEUM ENGINEER, April, I?J2 Other Calcium Silicates Calcium silicates, of course, are not .w to the chemist. Portland cement may be called a calcium silicate, for ex ample. Even some types of glass can be called calcium silicates, although being fusion products, they are not typical members of the family. Kaylo insula tion. however, is a chemically reacted product, and is a permanently set and stable product when it leaves the plant. Portland cement is an incompletely re acted chemical compound insofar as ultimate use is concerned and does not reach its permanent set until mixed with water. Glass is a fused product using no water, its raw materials melted -.mi blended at high temperatures. The manufacturing of hydrous cal cium silicate insulation is essentially a chemical reaction operation. Lime, silica, asbestos, and water are mixed to form a slurry that is poured into metal molds to shape the desired product. The '-reaction of this slurry is accelerated by 'the use of elevated temperatures in large pressure vessels .called indurators. After induration, of hardening, the ma'terial is dried to practical commercial limits. It should be noted that, because a chemical reaction is involved, there is no "binder'' in any Kaylo insulation. The millions of tiny air spaces per cubic inch that are left in the material after the moisture is driven off give this insulation its light weight and low ther mal conductivity. Every cubic foot of insulation contains so many tiny air spaces that the total area of the surface surrounding them is about 100 acres. By varying the proportion of water in the formulation it is possible to obtain products in various densities. As the density increases, strength becomes greater and insulating value less. The density of 11 lb per cubic foot presently used for heat insulation was established after long research as the one that rep resents the optimum combination of physical characteristics for that use, from a practical viewpoint. A 20-lb per cubic foot hydrous cal cium silicate is manufactured also, in the form of two building products--in sulating roof tile, for roof decking, and core materiaL for fabrication by other manufacturers into fireproof doors and wall panels. Unique Combination of Physical Characteristics The fire resistance of hydrous calcium sib'cate is due to its mineral composi tion. which withstands high tempera tures. It will withstand service tempera tures as high as 1200 F for an indefinite period, without loss of thermal efficiency. Actually, because exposure to high tem peratures drives off residual moisture, the thermal efficiency of the material improves after installation and use. As might be presumed from its struc ture. hydrous calcium silicate has a high absorption: yet it is not permanently damaged by wetting. Even when satu rated. it retains a high proportion of its normal strength, and after drying it re gains its normal strength and insulating value. It does not dissolve nor crumble. Its hygroscopicitv is low. After six hours exposure in an atmosphere of 120 F and 90 per cent relative humidity, for example, it absorbs only 0.9 per cent moisture by volume. With a --pH factor of about 10, Kaylo insulation is rust-inhibitive. Contact with metal coverings or fasteners, therefore, offers no problem.- This includes even Heat loss and surface temperatures of various thicknesses of hydrous calcium silicate pipe insulation applied to 20-in. pipe. Ambient still air 80F. 1 aluminum, unless the insulation is sat* urated. The material has remarkable dimen sional stability. Linear shrinkage after 24 hours' exposure to a temperature of 750 F is only 0.8 per cent, and only 15 per cent after exposure to 1200 for the same length of time. Wide Range of Forms Hydrous calcium silicate heat insula tion is made in two basic forms in which heat insulating block and pipe insula tion are further divided into many other forms. All units are 36 in. long. For the insulation of flat surfaces there is flat block. For the insulation of vessels from 6 to 60 ft in diameter, there is curved block. Thicknesses from one through five inches in increments of onehalf inch are available for both forms. Widths are three, six. nine, twelve, and eighteen inches. For insulation of pipes and tubes from one-half inch to six feet in diameter. Kavlo insulation is made in numerous forms, all to Simplified Dimensional Standards (successive layers "nest"). For tubes and pipes through twelve inches in diameters, it is made in sec tional form (two pieces to the circum ference ). For diameters through 24 init is made in tri-segmental form (three pieces to the circumference). For diam eters through 41 in- it is made in quadsegmental form (four pieces to the cir cumference). For diameters to 6 ft, it is made in k-segmental form (pieces nominally 18 in. wide and with various radii of curvature). Thicknesses range from one inch through five inches, in increments of one-half inch. The tri, quad, and k-segmental forms are unique, and are made possible only by the high strength and light weight of the material. On larger pipes, they permit the user to reduce greatly the number of pieces applied to insulate a given surface of pipe and reduce the 0 number of joints. The applicator, thei/ fore, handles fewer pieces, yet the ligl weight of the material makes thesi larger units easy to lift and handle. For large pipes with temperature above 500 F the number of pieces to be applied is reduced even further. In this range it is customary to apply double , thicknesses of other insulating mate--., rials--a diatomaceous earth type next to the surface in sufficient thickness to reduce the temperature to 500 or lower, and 85 per cent magnesia or other ma terial as an outer layer. Up to 1200, a single layer of hydrous calcium silicate (usually of lesser thickness than the for mer combination covering) is all that is needed. A standard 20-in. pipe with a tem perature of 700 is a good example of the labor saved by the use of hydrous calcium silicate insulation. With other standard forms and types of heat insula tion, the applicator must handle 26 pieces for each 3 ft of pipe. With k-segmental insulation, he handles only three. All sizes and thicknesses of this pipe insulation are made to Simplified Di mensional Standards. This system was devised by Ray Thomas, staff engineer for Union Carbide and Carbon Corpo ration. as a means of simplifying' the application and storage of pre-formed heat insulation. At the time that Thomas first published his proposal for the sys tem. this company was considering sim ilar ideas. Hydrous calcium silicate was among, the first, if not the first, heat insulation to be manufactured in con formance with his system. It is grad ually being adopted by other manufac turers. Under the Simplified Dimensional Standards system, every piece of pipe insulation is made with an outside diam eter that corresponds to that of a stand ard pipe. Under the old system, pipe- insulation is made in what are called standard and double standard thick nesses. So-called standard and double standard thicknesses are constant through certain ranges of pipe diam eters. Because standard pipe sizes are often actually larger than their nominal diameters (e.g., "one-inch" pipe has an actual OD of 152 in- "six-inch" pipe an OD of 6.63 in.), pipe insulation made to the old system will not always nest. To overcome this handicap, the Sim plified Dimensional Standards system varies the thickness of the insulation from nominal thickness. So-called "one- inch" thick insulation for a "one-inch" pipe is actually 1.08 in. thick. "One- inch" thick insulation for a "six-inch" pipe is actually 0.94 in. thick. These variations are insignificant as to thermal conductance (and our heat loss charts tOawkeenasc-tIullianlotishicpklannetssatinStoayarcecviolfuen, t). T^he New Jersey, one of two plants t devoted entirely to the production of hydrous calcium silicate. "result is that insulation made to this .system will always nest. Any size or ^thickness will fit snugly over either a standard pipe or another size or thick-. ness of insulation. Savings by S.D.S. System The savings anticipated by Thomas in'creatirij^if system have proved prac tical. Because of the interchangeability of insulation made to this system, the number of sizes and thicknesses re quired to do a given job is greatly re duced. This is particularly beneficial to the user who keeps inventories of mate rial for maintenance. He no longer need keep in stock all sizes and thicknesses that might be required for his insulated equipment. Instead, he can stock only enough sizes and thicknesses to make up the necessary combinations. If processes are changed after equip*ment has been insulated, thereby neces sitating greater insulation thickness, the user can simply apply another layer to his exisung insulation. He need not re move the first insulation and apply a new, thicker covering. It is worth noting that the 1200 F effective temperature limit'of hydrous calcium silicate also applies here. Ofteninsulations must be removed from equipment because new operating tem peratures exceed 500 or 600 F limits of .the material. Savings in Application To the engineers who design and specify and to the workmen who apply, the advantages of Kaylo heat insulation products are many, the limitations few. The "limitations" are tied up with the advantages. One is that the material is so strong and rigid that it cannot be broken and shaped easily around irregu lar surfaces, a not uncommon practice, though not considered good workman ship. On the other band, it is this strength combined with light weight that makes it possible to manufacture C-62 and apply the insulation in larger aizes than has been previous practice. This same strength makes it possible for the applicator to cut hydrous calcium sili cate insulation to fit irregular surfaces or odd spaces with an ordinary saw, or even with a knife. Applicators who use it learn the new "tricks of the trade" quickly. Applicators appreciate the fact that hydrous calcium silicate is non-toxic and "easy on the hands." And this high strength makes it pos sible to walk on insulated pipes and equipment during installation, and also reduces the amount of insulation break age during construction. The insulation foreman on a large refinery project in Illinois where this insulation was used throughout, remarked recently that the wasted insulation for the entire job could be hauled away in a pick-up truck. Estimators are learning to use a smaller breakage factor when hydrous calcium silicate is specified. It is not unusual for aoplicators to mix crushed magnesia insolation with water to form a paste and force it into small areas to be insulated. Hydrous calcium silicate, being insoluble in water, cannot be used this way. This Telescope of sectional hydrous calcium silicate pipe insulation, illustrating how Simplified Dimensional Standards allows nesting. same water insolubility, however, eli* nates damage from rain before westcoating on outside jobs, and also tne need for replacing insulation if stean or water leaks occur in insulated fipes. Refining towers, insulated but not weathercoated, have withstood S-day rains and high winds without damage. Hydrous calcium silicate insiilation is applied in the same manner as other insulating materials. It is available either with or without canvas covering, and can be strapped, wired o'r pinned to surfaces being insulated. Paints of any type compatible with an aAkaline surface can be used. Its nail and staph holding power are better than average It has good affinity for insulating and finishing cements. Due to its compatibility with a variety of adhesives, plus the fact that it is made to Simplified Dimensional Standards, hydrous calcium silicate pipe insulation as well as block may be shiplapped to order. Shiplapped insulation fits to gether like shiplapped lumber, provid ing staggered joints in single layer ap plication. Skilled applicators often make their own shiplapping in the field,' using a saw or even a chipping hammer. The variety of forms of heat insula tion that can be made in the plant or in the field by sawing, drilling, laminating, or combinations of them is almost end less.. Skillful, conscientious workmen have found numerous shortcuts using these methods. The engineer and the estimator need only to decide which product promises to be the more eco nomical for their requirements. Although a relative newcomer to the field this heat insulation is a proved material in the oil refinery and gas proc essing field. Among the companies using it for major installations are Sun, Texas, Gulf, Sinclair, Standard of Ner Jersey, Standard of Indiana, Standard of Ohio, Standard of California, Sunray, Pure Oil, Imperial Oil, Phillips, Shell. Cities Service, and Humble. * * / THE PETROLEUM ENGINEER, April, 19r ./ TO ALL -i NATURAL GASOLINE MEN GREETINGS from the NATURAL GASOLINE SUPPLY MEN'S ASSOCIATION We are looking forward to seeing you at the THIRTY-FIRST ANNUAL CONVENTION of the NATURAL GASOLINE ASSOCIATION OF AMERICA April 30, May 1-2, 1952, Rice Hotel, Houston, Texas Members of the Natural Gasoline Supply Men's Association: . The Aber Company Alliger and Scar- Company Alii*-Chalmers Mfg- Company Aluminum Company of America Imerican Air Filter Co-, Inc. Vmerican Locomotive Company .American Meter Co., Inc. American Packing & Gasket Co. ArPco Drainage and Metals Products, Inc. Arrow Industrial Mfg. Company Bald*iB-Hill Co. The Barrett Division J. B. deaird Company, Inc. Belief* Industrial Engineering Co. Bethlehem Supply Company W. H- & L D- Betz The Bird-Archer Company B'.ack. Sivalls & Bryson, Inc. ,, ! blaw-Knox Construction Co. W. H. Bowden Engr. St Const. Co. Braden Steel Corporation The Bristol Company Brown Fintuhe Company The Brown Instrument Company Brown St Root, Inc. Butane-Propane News Byron Jackson Company Cameron Iron Works. Inc. J. E. Carlson. Inc. Chicago Bridge and Iron Company Clark Brothers Company, Inc. The Condit Company Continental Supply Company C Lee Cook Mfg. Company Cooling Tower Service. Inc. The Cooper-Bessemer Corp. Joseph A. Coy Company, Inc. Crane Packing Company W. H. Curtin and Company Dallas Tank Company, Inc. Daniel Orifice Fitting Company Davis Regulator Company Dearborn Chemical Company DeLaval Steam Turbine Company Delta Engineering Corporation Double Seal Ring Company Dresser Engineering Company E. L du Pont de Nemours and Co.. Inc. Allen Edwards, Inc. Eggelhof Engineers John W. Elder Company ' Elliott Company Engine Life Products Corp. Engineers and Fabricators, Inc. I Ethyl Corporation The Fish Engineering Corp. The Fisher Governor Company Flint Steel Corporation The Fluor Corporation, Ltd. - The Foxboro Company France Packing Company Franklin Supply Company Frontier Chemical Company The Garlock Packing Company Gasoline Plant Construction Corp. General Electric Company J. B. Gill Company The Girdler Cnrpowinn. Goulds Pumps. Inc. Graver Tank St Mix Co., Inc. Greene Brothers, Inc. The Griscom-Russeil Company Grove Regulator Company D. W. Haenng and Co. Inc. The Happy Company Hercuies-Lupfer Engine Sales Co. The Hilliard Corporation Hudson Engineering Corp. The Industrial Insulators, Inc. Industrial Scientific, Inc. Infilco, Inc. Ingenoil-Rand Company Johns-Mannlle Sales Corp. Kansas Paint and Color Company Kayio Division M. W. Kellogg Company Kieley & Mu-.iier.-Inc. The Kocb Engineering Co. Koppers Company. Ind Ladish Company Warner Lewis Company A. M. Lockett and Co., Ltd. The Lubrtscosos Specialties Mfg. Co. The Lunkenheimer Company Maintenance Engineering Corp. Maloney-Crawford Tank St Mfg. Co. Manning. Maxwell and Moore Steve C. Maples St Company The Marley Company, Inc. Jas. P. Marsh Corporation C. A. Mathey Machine Works J. R. Meek Company Metal Goods Corporation Mid-Continent Supply Co. Moorlane Company Moran Furnace and Sheet Metal Co. National Petroleum News The National Supply Company National Tank Company Natural Gaa Odorizing Co., Inc. Naylor Pipe Company Nordstrom Valve Company Wm. W. Nugent & Gx, Inc. The Oil and Gas Journal OU Daily OU Well Supply Company O. L Olsea Company Orbit Valve Company Pacific Pumpa, Inc. Paramount Supply Company The Parkersburg Rig It Reel Co. Peerless Mfg. Company Perco Div, Phillips Petroleum Co. t--- Perry Equipment Corporation Petro-Cbem Development Co. The Petroleum Engineer Petroleum Processing Petroleum Refiner Pittsburgh Equitable Meter Co. Plastelite Engr. Company Plibrico Jointless Firebrick Co. Podbielniak, Inc. Power Machinery Company J. F. Pritchard & Co. Process Equipment Company Refinery Engineering Co. Refinery Maintenance Co. Refinery Supply Company Riddle and HubbeU Santa Fe Tank and Tower Co. E. W. Saybolt and Company A. O. Smith Corporation Southern Engine & Pump Co. Standard Pipeprotection, Inc. Stearns-Roger Mfg. Co. Stentz Equipment Co. Superior Mfg. Company Taylor Forge and Pipe Works Taylor Instrument Companies Teilepsen Const. Co. Tri-State Mfg. & Engr. Co., Inc. Tube Turns, Inc. Union Asbestos & Rubber Co. Union Steam Pump Sales Co. United Centrifugal Pumps Vinson Supply Company Vulcan Steel Tank Corp. Walco Engr. & Const. Co. Walworth Company Westcott and Greis. Inc. Western Supply Company The Wickes Boiler Co. Wilkening Mfg. Co. Woobank Machinery Company World Petroleum Worthington Pump & Machinery Corp. Wyatt Metal and Boiler Works Young Sales Corporation John Zink Burner Company ME PETROLEUM ENGINEER, April, 1952 T* obtain mart information on products advortfsod too pog 1-51 OH C-61