Document gDB5q1xJ64dMzQvdjbQVma2xa

Prefabricated Lead Plumbing Avoids Construction Delays THE ease with which lead plumb ing can be prefabricated has never been more aptly shown than in two very large housing projects now underway .in the midwest and south western sections of the country. In both of these projects, practi cally the same operational methods oi prefabricating the lead work were used. In both, the lead roughing-m was prepared long in advance of ac tual construction needs in the plumb ing shops of the various contractors under ideal working conditions, a situation that permits of assembly line techniques that result in better work manship at lower cost. This pre-assemblv, of course, also allows for steady, all-weather work and a smooth tlow of units for quick installation when the buildings are sufficiently ad vanced, thereby further helping to lower costs by avoiding construction delavs. delavs that can very often mean the difference between a profit able or losing venture. The two jobs are public housing projects totaling 4.200 units, 3,500 in West Dallas, Texas, and 700 in and near East St. Louis. 111. In the West Dallas project, lead drum traps for all baths with lead Lead work in process in the plumbing snop on the site of the 3-500 unit low cost housing protect in % est Dal las. T exas. waste and vent connections and lead bends for water closet connections were prefabricated for use throughout the 3.500 dwelling units. Individual apartments will have one to four bed rooms in groups of four, six, seven and eight apartments to the building. The total 3.500 units were divided into seven project contracts each Assembly line technique has stockpiled these lead plumbing units jor East St. Louis low cost housing protects. 2-- -- having approximately 500 units. The FarweJl Co. Inc., mechanical contractors of Dallas. Texas, secured the plumbing contracts for three of these projects or approximated 1.500 units. The accompanying photographs illustrate the assemble line technique used bv the company in prefabricat ing the plumbing installations. The same pre-assemblv methods for the plumbing in the remaining 2.001) units are beina used by the ilm. Keseling Plumbing Co. ot Houston. Texas, and the Russel! Plumbing Companv of Oklahoma Cite. Okla homa. each of whom have the plump ing contracts for approximately l.Ouu units. Plans for the project were draw n up bv the Associated West Dal las Housing Architects. In and adjacent to East St. Louis. Illinois. 700 apartment units are nowunder construction in three separate projects. Two of these. Roosevelt Homes and Villa Griffin will have 300 units apiece and the other, De Schields Homes, will have 100 units. E. J. Maag. plumbing and heatins contractor of East St. Louis, is install ing the plumbing for all three proj ects and the assembly line technique LIA?fe012 Lead bends, lead drum traps, lead wastes and vents prepared and ready for installation on the West Dallas job. Typical pre-assembled lead roughing-in installed for back-to-back bathrooms on the IPest Dallas public housing project. of preparing the lead roughing-in was used. The work was prepared in ad vance of construction needs and as a matter of fact, when the accompany ing photographs were taken, construc tion had not progressed sufficiently to secure photographs of the work in place. The plumbing was identical in each project and high quality, Lead Indus tries Association "Seal of Approval" lead pipe and fittings were used for all fixture connections, wastes and vents. Drum traps were fabricated in the plumber's shop from 4 in. lead pipe as were roof flanges made from 4-lb. sheet lead. Stacks were castiron soil pipe with lead calked joints. Approximately 96 tons of lead, in cluding 61 tons of lead pipe will be required for completion and the plumbers estimate that 20.000 wiped joints will be required. Even lead scrap accumulated from shop fabrica tion was utilized by the plumbing con tractor in making cast wall flange washers and for calking purposes, a form of economy that can only be practiced when lead is used. .Among the unusual assemblies that were prefabricated for these housing units were 67 harp-shaped waste and vent units, each with four U/h-in. vents and four D'k-in. stubs to pro vide for back-to-back combination sinks and laundry trays. Lead Resists Corrosion In Newest Liquid Sulphur Dioxide Plant SULPHUR dioxide is an important industrial chemical, a large ton on a process perfected bv the Ameri can Smelting and Refining Company nage of which is obtained as bv-prod-at Selby. California ("Lead". Vol. 18, uct from non-ferrous metallurgical No. 3). The process seri es as a prime operations. Purifvina and concentrat example of how modern chemical en ing sulphur dioxide for use in oil re gineering can take advantage of lead fining. paper pulp production, fruit to combat the corrosive action of wel curing, beet sugar refining, chemical, sulphur dioxide gas alone as well in wine and beer production, has be combination with a highly corrosive come an industrial process whose organic liquid, dimethylaniline satu growth in importance has paralleled rated with sulphur dioxide. the national concern with air pollu Briefly, the process involves absorb tion bv waste sulphurous gases and. ing 7i/o to 8 percent sulphur dioxide more recently, the decrease in avail gas in dimethylaniline (DMA), an ability of native sulphur, long a cheap organic solvent. The sulphur dioxide source of sulphur dioxide. is then stripped from the absorbent The Tennessee Copper Company at by means of indirect steam. Next it is Copperhill, Tennessee, recently con cooled, dried with 98 percent sul structed a new plant for the manufac phuric acid, compressed and stored ture of liquid sulphur dioxide based as a liquid under 30 to 40 lb. per sq. 3-- -- in. pressure until ready for shipment. Absorption of dilute sulphur takes place in a bubble cap tower. The shell of the tower is made of 12-lb. chemical lead erected in sections and supported bv steel columns and ring angles. Inside the tower are 19 travs made of 8bo percent antimonial lead 34 >n- thick and supported on bonded lead steel spiders. Antimonial lead bubble caps 4 in. in diameter are positioned on each tray. Stripping of the sulphur dioxide laden DMA and recovery of the ab sorbent are also accomplished in a bubble cap tower of smaller size. The shell in this case consists of bonded lead lined steel sections, the steel and lead each 14 in. thick. Supported on bonded lead lined steel bars welded Li A26013 to the tower shell are 29 antimonial lead bubble cap travs. Drying of the purified sulphur-di oxide gas is accomplished in a steel bubble cap tower, the lower portion of which is lined with 16-lb. lead to serve as a sulphuric acid storage ves sel. The first trav. subject to weaker acid and wet gas. is constructed of lead as in the other towers while the upper 6 trays and caps exposed to 98 percent acid are of steel. Also playing a prominent role in the DMA system of liquid.sulphur di oxide manufacture are a number of lead lined steel tanks and sheet lead tanks of cage type construction used for storing and separating various chemicals. DMA solutions to and from the circulating pumps are handled in lead pipe. Cooling of the DMA solu tion takes place in six lead pipe cool ers each consisting of 6 percent anti monial lead pipe 1 in. in diameter formed into two helical coils, one nested within the other. Cooling water is sprayed over the outer surface through a circular lead distributor. At one stage in the process it is nec essary to effect a heat exchange be tween hot. stripped DMA and rela tively cool, sulphur dioxide-laden DMA. The heat exchangers are illus trated herein and described in greater detail in a previous issue of ''Lead'' I'Vol. 18. No. 3). They consist of con- Base of bubble cap tower where sulphur dioxide is absorbed in dimethrlamiine. Shell of tower is lead, as are trays and bubble caps inside. Lead pipine ran also be seen. centric lead pipes, the outer having a structed in this country'. It represents 2-in. I.D.. and being of 6 percent anti the very latest design in modern waste monial lead; the inner a 1-in. I.D. of gas recovery and utilization systems finned cross section chemical lead. The with a capacity of 30 tons per day oi coil is designed so that the area of the pure water-white liquid sulphur di space between the two is approximately oxide. To achieve this production with equal to the cross-sectional area of the a minimum of shut-down time due to inner pipe. . corrosion-caused failures approxi This liquid sulphur dioxide plant mately 95 tons of lead were used In is the second of its kind to be con- ; --fabricating the plant equipment. 4-- -- LIA2 601A Synchrotron Emplovs Lead For Radiation Protection WO and one-half tons of lead Tvarying from 2-in. to 10-in. in thickness eliminate stray radiation inThe new 70 million elec a new source of high energy X-rays known as the synchrotron. Recently tron colt synchrotron deleioped and built by the General Electric Co. tor installed at the California School of the California School o' Medicine, the synchrotron is an X-ray Medicine. deep therapy machine for combatting cancer. It consists essentially of a magnet and electron source capable of generating high energy X-rays able PHOTOS BY GENERAL ELECTRIC CC. to penetrate much greater depths than conventional vacuum tubes. tube located in the magnetic field and Developed and built by the General then accelerated to about 186.000 mi. Electric Company at Pittsfield. Mass., per sec. At this speed thev strike a the synchrotron is suspended by fixed target which causes them to pass means of a hydraulic-mechanical through the walls of the doughnut mechanism which permits elevating it and out into the air as highly pene fifteen feet over the floor above a trating X-rays. patient or lowering it directly over Protection of operating personnel the patient. It is also able to rotate as well as the patient from dangerous about fixed shafts thus enabling the stray radiation is gained by confining X-ray to be directed at any angle. the entire unit in large lead chambers, The main components of the me the lead being bonded directly to the chanism are a doughnut shaped vac steel casing of the sheathing. The com uum tube surrounded by a large plete machine is operated bv remote laminated core which becomes mag control from a portable unit in the netized hv high voltage coils. The X-rgy room which is lead lined to electrons are injected into the vacuum eliminate radiation in the adjoining rooms. After aligning the beam to the position of the patient, the technician leaves the room and operates the syn chrotron from a master control desk to avoid the possibility of exposing himself to excessive radiation. As distinguished from the betatron previously described in "Lead" (Vol. 18, No. 5i which is-capable of pro ducing 22 million electron volts for medical treatments, the synchrotron can generate higher energies and can be almost universally positioned. Both operate on the same principle, however, and require the density of lead to absorb dangerous rays emitted in directions other than desired. Belou. com ponent parts oi lead shielding chant hers. Lead is bonded to <t n,-m. steel shell. Right, synchrotron before enclosure in outer casing, shnuine lead shielding in place. Grand Central Station Avoids Water Seepage With lead Pans e s t a u r a n t kitchens, soda R fountains, washrooms, rooms for certain industrial processes, bath rooms. shower rooms, wherever floor surfaces are subject to frequent or constant wetting or flooding, pose the problem of controlling seepage to protect the building structure and spaces below. The problem is solved by the use of a sheet lead pan. cailed a safe pan. under the floor of the leak age source. The Grand Central Ter minal in New York City is somewhat unique in that it has several different installations requiring this type of protection. Experience has demon strated to engineers of the New York Central Railroad, which owns the Ter minal. that a lead pan best serves the purpose and prevents the expensive damage that might otherwise occur. Accordingly, all such installations in the Terminal are so equipped. An 84b. sheet lead pan, 46 jt. z 12 ft., installed under a luncheonette fountain on the upper level of Grand Central Terminal. A recent instance of this is the lead safe pan under the new fountain in the Terminal Luncheonette, operated by the Union News Company on the concourse level of the station. The water problem here is caused by the constant floor washing and the pres ence of such water-using equipment acid-containing fruit syrups. The cor rosion resistance of lead admirably suits it to negating this hazard. The safe pan covers an area of ap proximately 46 ft. x 12 ft. and is made entirely of eight pound per square foot sheet lead. The individual lead prevent leakage at these breaks in the lead pan. Inverted V bleeders lead ing to weep holes in the floor drain are tack welded to the pan. An eight inch upstand surrounds the entire pan and a box-like opening in the floor for refrigerating lines. as soda dispensers, coffee urns and sheets are welded together. All pene Of prime importance in the instal sinks, but beyond this is an extra cor trating pipes are collared with a lead lation of a lead safe pan is the proper rosion problem caused by spillage of sleeve which is welded to the pan to preparation of the lead surface before pouring concrete for the new floor. Workman welding lead upstand around opening tor refrigeration lines. .Note lead sleet es in place around penetrating pipes, ready to be welded to pan. The surface is coated with asphalt paint. This is done because water which has seeped through cement, concrete or mortar containing free lime mav be corrosive to lead as it is to many other common metal-. The asphaltum protects the lead during the curing period of the cement. After the cement has completelv carbonated the danger no longer exists. In addi tion. for the Terminal Luncheonette a layer of roofers felt was nut down before pouring to protect against abrasion from the gravel. This, of course, is desirable. The proven dcpendabilitv of lead for this purpose is the reason for its long-time use in all sorts of applica tions where constant wetting is a problem. 6-- -- LlVtbO'-6 Lead Helps Preserve Basic Documents Of The United States Method used lor hand soldering protecting sheets of tempered glass to the lead sepa ration strip to form a completely air-tight enclosure. the edges of the panes so as to seal the unit hermetically. A special me tallic coating is first applied to the glass surfaces at its edges so that a complete metal-to-giass bond is ef fected. Thus glass, lead separator strip, helium gas, and special leak de tectors, have been combined to pro vide the desired protection to these priceless parchments. At the same time the unit serves to give the public a better view of the documents. In commercial Thermopane the lead separator strip is either ^i-inch LIB BEY -O W EN S - FORD CLASS CO. or i^-inch in width. Large "picture windows" are normally fashioned of two pieces of 14-inch polished plate HE Declaration of Independence, Tthe Constitution and the Bill of Libbev-Owens-Ford Glass Companv were selected for the enclosures after Rights are precious and irreplaceableexhaustive tests by the Bureau of glass separated by a l/^-inch dry air space. In many smaller windows Thermopane is composed of two documents whose preservation for an Standards. The special panels for the pieces of i/g-inch glass with a 1^,-inch indefinite number of centuries is vital. preservation of these documents con dehydrated captive air space. Even harmful effects that appear only sist of two panes of tempered plate The lead separator strip, in addi slowly or to a slight extent become important in this instance. Hence the Library of Congress requested the National Bureau of Standards to de termine the best means of preserving the sheepskin parchments on which glass. There is also enclosed in the panels a cover glass which lies di rectly on the documents, but has noth ing to do with the sealing function. The two panes of glass are separated and held together in the unit by Sc tion to being a road-block to the in vasion of moisture, provides flexibil ity so as to accommodate the differ ences in expansion or contraction when the outer glass is exposed to ex treme cold and the inner glass to these historic statements are inscribed. inch lead separator strip soldered to room temperature. The Bureau decided to enclose the documents w'ithin sealed glass enclo sures filled with helium. This protects Constructional details of type oi enclosure in uhich are encased the Constitution. Declaration o! Indepcniience. and the Bill ol Rights. them against ehemicallv active gases such as oxvgen and sulphur dioxide, inserts and microorganisms and con tamination with dirt or corrosive sub stances while, at the same time, they can continue to be on display to the American people in a shrine at the Library of Congress. The Bureau of Standards deter mined. after tests, that the helium should contain between 25 and 35 percent moisture at room temperature. Too little moisture leads to brittleness and cracking of the parchment and too much to the growth of bacteria and hydrolytic reactions. Double glass panels made commer cially- as "insulating" windows under the trade name "Thermopane" by LI A 2b017 THE FOLLOWING ARTICLE5 AND REPRINTS CONTAIN INFORMATION. DRAWINGS AND SPECIFICATIONS ON THE USE OF LEAD PRODUCTS HELPFUL TO ARCHITECTS. ENGINEERS AND OTHERS INTERESTED. THEY ARE AVAILABLE FREE OF CHARGE. EXCEPT WHERE OTHER WISE INDICATED. UPON REQUEST TO THE LEAD INDUSTRIES ASSOCIATION, -120 LEXINGTON AVENUE, NEW YORK 17. N. Y. LEAD IN' MODERN INDUSTRY $1.50 Postpaid A fuilv illustrated. 230 page, doth bound book describing ai! phases of the production and ue df lead, iead alloTs and lead compound*. Di.*cui<'n of tbe physical and chemical properties of lead and its compound* is included. Sufficient!' technical to be of practical value to the engineer in industry, vet broad enough for those with a more casual interest. THE DEPENDABILITY OF FUTURE LEAD SUPPLIES A leaflet containing a brief and non-technicai j-'usMon of the lead situation. Tells why consumers in this country may depend on adequate supplies oi lead in the future. METAL PROTECTIVE RED LEAD PAINTS Tbe versatility of red lead in protective primer* to meet wide range of surface conditions, drying schedules and economic demaoda ia described. Reprinted from "Paint and Versisb Production." January. 1951. RED LEAD TECHNICAL LETTERS A sertas of technical letter* Issued by the Rad Lead Division. Lead Industries Association. The numbers and titles follow: (Available separately ) Technical Letter No. 3--Red Lead Primers for Atmospheric Exposure Technical Letter No. 4---Rod Load Palma for Marino Exposure# Terhnirai Letter No. j--Red Lead-Vinyl and Coumiroas Type Paints Technical Letier No. 6 Red Lead Palm Formulations. Technical Letter No. 7--Paint Systems for 11 v draulie Structures FEDERAL SPECIFICATION TT.P-86a Paint: Red-Lcad-Bane, Ready.Mixed Cover? four types of Ted lead base paints including two fat drying formulations. Msnv intended ap plication* lifted. AN INVESTIGATION OF PRIMERS FOR MARINE ATMOSPHERIC ENVIRONMENTS Results of an Investigation of synthetic vehicles and red lead mixed pigment primers over an exposure period of three and one-hxlf yean in a rigorous marina atmosphere. Reprinted from "Official Digest" published by The Federation of Paint and Varnish Production Clubs. CONTROLLING CORROSIVE AIR POLLUTANTS A di>cu*ion of the various method* in use today tn control corrosive air pollutants. Reprinted from "Air Repair.'' May. 1952. LEAD IN MODERN CHEMICAL CONSTRUCTION What you should know about the various type* of lead construction in tbe chemical held. Reprinted from "Chemical Engineering.'' Jan. 1952. NEW DEVELOPMENTS EXPAND USE OF LEAD CONSTRUCTION Improvements in lead fabrication and iastaLlauoo methods are described and illustrated in t re print from "Material* & Melboa? ' -Mav. 1951. The article `how* how lead con-iruction develop meats have continued to keep pace with develop ment* in the chemical tod process industries. THE USE OF LEAD IN THE PULP AND PAPER INDUSTRY Detailed description of various applications of lead in the modern pulp and paper mill. Covers ail phi*ee of paper puip manufacture and treatment including sulphite acid manufacture, acid pulping, bleaching and stock haodling. Reprinted from "Paper Trade Journal,'* Oct. 26. 1950. LEAD WELDING Ad tnfonsatlva as well a* practical guide to lead elding, ReorlQted from the "Welding Randivmlc, Third EdUloo" published by the American Welding Society. LEAD IN MODERN PLUMBING-- WHY, WHERE. HOW IT IS USED A 24 page booklet containing descriptive informa tion as well as four pages of deisiled drawing* for plumoing installations m vanou? lype houses. FEDERAL SPECIFICATION WW.p.325 For Pipe. Beads and Traps. LEAD Part 5 of Section IV of the Federal Standards Stock Catalog, official-publication by tbe Government Print ing Office. MEMBERS OF THE LEAD INDUSTRIES ASSOCIATION ALPHA METALS. INC.........................Box 34, Bergen Station. Jersev Cu t 4, N. J. THE AMERICAN METAL CO.. LTD........................0l Broadway. New York 6, N. T. AMERICAN SMELTING 4 REFINING CO........ 120 Broadway. New York 5. N *t . ANACONDA COPPER MINING CO............................25 Broadway. New Y..rk 4, N. V BERS 4 COMPANY'. INC.......................... Ablacd 4 Lewi> Sts.. Philadelphia 21, Pa. BROKEN HILL ASSOCIATED SMELTERS PROPRIETARY LTD. Collin' Hou-c. Melbourne Cl. Au-lraha BROKEN HILL SOUTH. LTD................ Box 194-C. C.P.O. Melbourne. Australia BUNKER HILL 4 SULLIVAN MINING AND CONCENTRATING CO Kellogg. Idaho CAMBRIDGE SMELTING CO.................................... 100 Pacific Si. Cambridge. Mas*. CERRO DE PASCO CORP.......................................... 40 Wall St.. New Wk 5. N. Y. CHIEF CONSOLIDATED MINING CO............................................................Eureka. Utah THE CONSOLIDATED MIN1NC 4 SMELTING CO OF CANADA LTD. Place D'Armes. Montreal 1. Canada DAY MINES. INC............................................................................................... Wallace. Idaho DICKSON WEATHERPROOF NAIL CO...............................Box 390. Evasion 4. 111. DIVISION LEAD CO................................................836 V. Kinzie St.. Chicago 22. 111. E, I. DUPONT DE NEMOURS 4 CO.. INC.............................Wilmington 98. Del. THE EACLE-PICHER CO............................. American Buiidmc. Cincinnati 1. Ohio THE ELECTRIC STORAGE BATTERY CO................ Box 8109. philau. Irh.a, Pa. ETHYL CORP............................................................ 100 Park Ave.. New You 17. N. Y. FUSION LEAD CO. (The Glidden Co. i.................500 Penn Nr. Scranton T Pa EVANS LEAD DIVISION (National Lead Co.)....Box Ub7. Chatlfon 25 W. V. EVANS METAL CO..............................................Box 97. No. Side 8r.. Atlanta. Ga. FEDERAL MINING 4 SMELTING CO................ 120 Broauwav. New York 5 N. Y. FEDERATED METALS DIVISION OF AMERICAN SMELTING A REFINING CO. 120 Broadwav. New 3 ork 5. N. L THE FIRESTONE TIRE 4 RUBBER CO. Box F. Fire*tone Perk. Akron 1. Ohio THE FLEMM LEAD CO.. INC. Bradley Ave. 4 School St.. Long Gland Cnv 1. N. Y. T. r. FULLER 4 CO........................................ 301 Mission St.. San Frann*rn 19. Cal. GARDINER METAL CO............................... 4fi2Q S. Campbell Ave.. Chicago 32. 111. GLASER LEAD CO.. INC................................... 31 Wvrkoff Ate.. Brooklyn 27. N. Y. GOLDSMITH BROS. SMELTINC a REFINING CO5B E. Ta-hinptor St.. Chicago 2. 111. HAMMOND LEAD PRODUCTS. INC............... 5231 Hohman A'e.. Hammond. Ind. HECLA MINING CO.................................................................................................. Wallace. Idaho HUDSON SMELTING 4 REFINING CO............. 85-95 Hvatt A>e.. Newark i. N. J. IMPERIAL TYPE METAL CO . . .3400 Aranitngo Ayr.. Philau. ii-nia i Pa- INTERNATIONAL SMELTING 4 REFINING CO. I Anaconda bate- o Agent-< 25 Broadway. New Yt i 4 .V \ . THE JOHNSTON FOIL MAM F.ACTl RING CO. ' OU16-M20 ? Broadway Si. Li-u i* 11 M-- KNAPP MILLS. INC........................ 15 Borucn Av. . L<nc Mand l.nv . N LEAD PRODLCTS CO................................................. 709 \ \ r,a-.. Hou-ion 3 Tcxu- JOHN R. MacGRECOR LEAD CU. ...4520 W 1 Si n ?t.. Chicago 23. 111. METRO SMELTINC CO........................Ontario 4 Batn St-. Philadelphia 34 Pa. MIKE HORSE MINING 4 MILLING CO................ 62 Power B1.1l .. H-l-ra M.-m NATIONAL LEAD CO...............................................Ill Broadway N^ M'-k N Y. NEW PARK MINING CO.....................................................................................Keeney l:ah NORTH BROKEN HILL. LTD.. . .Box 1903-R. C.P.O.. M.ii.,,urn. Au-trauu NORTHWEST LEAD CO................................ 2700 loth Ave.. S * . t U,,.n THE OKOMTE CO............................................................................................. Pa*aic. N. J. PARK UTAH CONSOLIDATED MINE? CO. lunnnmiAl Bank Bldg, Sail Lake Cnv 1 Itai PENNSYLVANIA SMELTING 4 REFINING CO ',l(vt E. Omar,,, w, Phiia>ie11 i s.i 3 l Pa. PHELPS DODCE CORP............. . . 40 W ,i i 1 .. .v w 't < ,r L N RIVER SMELTINC 4 REFJNI NG CO........ 093 Bradley R.i i.d. 1Cl.-vr ianit 1 < tnir ROCHESTER LEAD WORKS. INC............... .5Hi Exchanc > i.. K ... n-- trr ft. \ 3 . ST. JOSEPH LEAD CO............. . . .250 Park A>. c. N-- w Y r rk ! * N Y SHATTUCK DENN MININC CORP............ . ... 120 Br..adv.3-v N. W 3 > r k 5. N 5 . SIP1 METALS CORP................... 1708-1720 El-t. >n Or. . Ch icac 32 111. STANDARD ROLLING MILLS . INC........ . . 14.3 Jewell >< .. Br t>r k 1' n ' ' N Y UNsHINE MINING CO........... . 115 N. ?rc on d St . Ya kjnia W ,j-h UNITED AMERICAN METALS CORP........ .)% Diamond Vt.. Bt'r- LI', n 22 UNITED STATES SMELTINC REFINING AND MININC; co.. IN( . s37 William :.. N rw Y rrk N. *1 . N Y. THE VICTORY WHITE MET.AL CO............6100 Roland Ayr Cleyiant 4 Ohio HYMAN VIENER 4 SONS...................................3.300 Hatcher R,, hmond 5. \t. VULCAN LEAD PRODUCTS CO.......... 1545 W. Pi.-rcc St.. Milwaukee 4. W,-. THE WENSLEY MET.AL PRODUCTS CO..........1445 0-ace t . Dm.- 4. Coir WESTERN ELECTRIC CO. INC............................ 195 Broadway New V.rk 7 N. Y. WESTERN LEAD PRODUCTS CO.. 4530 E. Pacific Way. L..- AnH.-. 22, Cal. WHITE METAL ROLLING 4 STAMPING CORP. 30 Moultrie St.. Bro-Yl.n 22. N Y. WINCHESTER REPEATING ARMS CO....................................... New Hayen i. Conn. THE ZINC CORP. LTD........................Box 384-D. C.P.O.. MeHmurno. AuMraiia * Aociate Member. UPON REQUEST. THE LEAD INDUSTRIES ASSOCIATION WILL BE GLAD TO MAIL "LEAD" REGULARLY, FREE OF CHARGE. TO THOSE nnERESTED. AND WILL COOPERATE WITHOUT OBLIGATION IN THE SOLUTION OF YOUR LEAD PROBLEMS PRINTED IN V. S. A. IV PUBLISHER* PPI'-TIN", r O M T \ NEW (ORK CITY <5 * fi 26018 LU