Document G5eapJQMj4Lx3npKN289OYBw4

Matrix So diverse are the uses of lead that few people outside the lead industry itself are familiar with more than a Of ships, and walls, and carving knives ... fraction of them. To provide a better idea of lead s roles. Lead Industries Association has had a motion picture made. "The Lead Matrix", a 26-minute color film, was the result. The title refers to the fact that while lead, as lead, is seldom seen and sel dom purchased bv the average Amer ican. it is around us at all times serv ing in dozens of ways. From the clock radio that wakes us in the morning to the lead sound-proofing that mav make it possible to get to sleep at night it serves unseen, it is not onlv in alloys like solder, or as a building material like sheet for waterproofing or sound proofing, but in toothpaste tubes. X-ray shielding, cable sheath ing. automobile and other batteries, stained glass windows, ceramics, paints, and all the newer develop ments like thermoelectric generators, high-efficiencv piezoelectric materials, and better ceramic magnets. A wide sampling of these uses is explained and dramatized by the movie. Though it will be of interest to technical people, it was produced w ith the average well-informed layman in mind. Produced by Cullen Productions, Inc., 1776 Broadway, New York, the film is being distributed by the Sterl ing Films, Inc., 375 Park Avenue, XTew' York and all requests for infor- ... stained glass, trucks, and noise. mation about it should be referred directly to it. WV Ml! VU'IIUMI! 2-- -- 3U L IA26425 Woman solders integrated circuit packages on new Argus Engineering Co. automatic infrared soldering The soldering of glass-metal composites and to join items is also successfully comile infrared units such as these. THROWS NEW LIGHT ON SOLDERING Most of us turn on a light to read or write. Now you can use a light to solder! It's done with infrared light energy. Of course, infrared soldering has been around for years. hat's new is that it's concentrated, or fo cused, so that very high temperatures (over 4000F) may be quickly at tained. Anvone who, as a youngster, ever experimented with a magnifying glass in the sun is familiar with the prin ciple. Radiant energy from the sun can be focused with a simple lens to a point where it will char and then ignite most any combustable material. Using a highly polished elliptical mirror with an infrared-producing bulb as the energy source, Argus En gineering Company of Hopewell, New Jersey put this principle to work on the job of soldering. No other heating method is so simple yet produces such reliable results. It's simple because only light energy does the work. It's reliable because its performance can be consistently duplicated time and again. Besides extremely high tempera tures, the new focused infrared units can solder at the low'est possible tem peratures, too. If low intensity lamps are used, joints with 60/40 solder can be made consistently at less than 50F above the 361F liquidus. This is an important bonus when heatsensitive electronic devices must be soldered. Contamination is another bugaboo in this day when even a piece of dust may cause a multimillion dollar mis sile to go astray. Because the infrared heater makes no contact whatsoever with the solder joint -- nothing but light energy touches the solder--clean liness joins reliability as a major feature of this new device. Of course, economy and control are two other important characteristics that can make or break any soldering operation. How is the infrared unit controlled? Its operation is very ac curately programmed through a sili con controlled power supply which has an internal timer. This control comes with the lamp and is considered an important adjunct by Argus, who also perform complete feasability and development studies on heating prob lems as well as desgining and con structing the equipment. Argus offers a choice of many dif ferent designs and arrays of lamps for joining operations. Lamps ranging all the way from 45-watts to 1500-watts may be employed -- choice depends primarily on application requirements and economic considerations. 3-- -- LIA26426 SHOT _.. .... ^ The basic steps of cartridge preparation, loading FROM GUNS! with powder, and seating the bullet are shown. Over the past twenty years the num ber of sportsmen interested in the shooting sports has doubled. Along with this sport has come the hobbyist who finds reloading or handloading a pleasant pastime. Not only is reload ing satisfying in itself, but means a substantial savings to those sports men engaged in target and skeet shoot ing as well as hunting. Reloading is actually the reusing of fired cartridges over and over again. Shot shells may be reused as many as twenty times and metallic cartridges even more. Hardly a new hobby, reloading goes back to the Civil War days when re loading equipment and accessories were supplied with the purchase of a firearm. Although this is no longer done, most large arms manufacturers continue to sell reloading equipment. Today there are over 100 manufac turers of reloading equipment and accessories. Reflecting this increased interest in reloading, manufacturers have made a variety of bullets available to the hunter or target enthusiast. These are available through a number of small ammunition manufacturers who cater to special demands of the reloading craftsman. Savings up to 60 per cent over the retail cost of the shot shells are pos sible. savings of two thirds can he made on metallic cartridges. By pro curing their own metal, reloaders, bv swaging, can enjoy additional sav ings. Swaging is the art of forming your own bullet to meet your specifi cations. Usually a type metal or other hard alloy is used for this purpose. Equipment is relatively inexpen sive: a portable loader sells for $9 to 70, powder measures range in cost from $9 to 30. Dies for metallic car tridges start at about $6, and shotshell reloaders from $10 to 600. Thus, only a modest investment is needed to set up shop. Among the standard reloading handbooks available to reloaders are: "Lyman Reloaders Handbook", $2.50; "Speer Manual for Reloading Am munition", $2.95; "NRA Illustrated Reloading Handbook" published by the National Rifle Association of America, Washington, D.C., $4.50 to non-members and $3.50 to members. Additional reloading information may be received from the many gun clubs, rifle and cartridge manufacturers as well as the National Shooting Sports Foundar'"- LIA26A27 San Francisco Bound, a barge lays cables near one end of the route from Oakland across the Bay. HELLO * | In a massive communications op eration, more than six million pounds of rugged, lead sheathed telephone cable is now being laid across San Francisco Bay. The job is part of a still bigger project for unsnarling the traffic-choked streets of San Fran cisco. Because tunnels for the area's new rapid transit system are sched uled to be dug along the routes of Loading cables into gondola cars in a pat tern of massive figure "8V for shipment to California. FRISCO, HELLO existing cables, the Pacific Telephone and Telegraph Company is laying 12 new ones in another path across the famous Bay. A total of 568,000 feet of cable are being manufactured by the West ern Electric Company's Baltimore Works for installation along a tenmile route which runs from San Fran cisco north of the Bay Bridge to Yerba Buena Island, then across the island and under the Bay again to downtown Oakland. The biggest part of the job is lay ing 194,000 feet of cable in 12 lengths at the bottom of the Bay. 'W hen the entire job is cut in to service, in late 1966, the cables will carry inter-city calls as well as traffic between San Francisco and the Far East. As these cables are down on the bottom "for keeps" they are expected to provide completely reliable, trouble-free serv ice for many years to come. Two types of cable are being used, and both of them are sheathed in lead 0.159 in. thick and two alternate lay ers of four-gage steel armor and jute. One type cable contains 1,219 pairs of wire, weighs 33 lb. per ft. and is the thickest submarine cable manu factured by Western Electric. The other cable is the same thickness but contains 608 pairs of wire. The five-inch thick cable posed a weighty transportation problem. Rather than carry the cable on large reels, each 1700-ft. length of cable is --5-- shipped in a gondola freight car where it is laid out in a figure eight pat tern without any special restraint or container. At the receiving end lengths of cable are spliced together on flat cars placed between the gondolas. Then 9,000 ft. of cable can be rapidly wound on the cable-laying barge's supply reel without interruption. Splicers working in a flatcar force air through a completed splice in a water trough to test for leaks. LIA26A28 On left bins of smell par+s are being moved while foreman on personnel carrier takes right of way on errand to distant point. Note "PM" batteries receiving charge on right while "AM11 battery works on Truck No. 16. LOADBUILDER UNION Electric Company, power supplier for St. Louis and en What progress to date? Well, Pat Dougherty. LE Supervising Engineer virons, continues to be a leader in the for Power Sales, mentions just three dynamism pervading the "Gateway to of the numerous examples in the The West." Currently, the company area: Rexall Drug Co., Carter Car is achieving widespread notice for its buretor Division of ACF Industries. association with the city in the re Inc., and a major automotive assem streetlighting of the 81 square block bly plant. central business area to a revolution Six hundred and fifty thousand ary high level (12 foot-candle aver (650,000) square feet on seven floors, age I. This is a major contribution complete with elevators, is the theater to the re-vitalization of downtown St. of operations for a fleet of 70 electrics Louis, focal point of which is the 630 at Rexall Drug Company. Preventive ft. high Jefferson National Expansion maintenance is the gleam in the eye Memorial Arch. of Don Higgenbotham. Plant Engi Although the company expects this neer. when he shows the new charging new streetlighting system to bring in and service room that will accom additional revenues, other less con modate all 70 vehicles simultaneously! spicuous but equally important load To prove the point his meticulous building programs are being devel records show that the original 5 fork oped. Outstanding is a motive power lift trucks, purchased in 1946. are still batterv campaign launched in the fall putting in a full day's work alongside of 1963 with a rodeo, or round-up their newer teammates. Downtime and showing, of electric trucks for more delays, intolerable in the manufacture than 750 commercial and industrial of more than 3600 items streaming customers (l e a d . 27 (4) 1964.) constantly to 7 major distribution points, are avoided by such measures Rexdil's laboratory-clean charging room where 70 trucks are cared for. as scheduled steam cleaning, lubrica tions. controls adjustments--all under the responsibility' of one maintenance technician. In a world gone automation-happy. Carter Carburetor stands out among mass producers: for not automating material handling! Says Project Engi neer George Kuhl, "This way, we stay `loose'--ready to roll with the punches." Carter produces literally hundreds of carburetor and fuel pump models each year for original equipment and replacement markets; at any time it may be necessary to insert into production a run on short notice, or to set up for some special parts for a special customer. So. vou will find no overhead convey tern, no belt line, no moving An insert run doesn't disrir entire plant. How are parts from fabrication to stock to as point? By electric truck, of In fact, a total of 38 models lifij or push all shapes of bins cont all shapes of parts to and fro: cision machining, or from bench assembly to final close ii Racked radiators are stored in outdoor yard. Plant engineering says that electrics are not es pecially ordered for out doors, but always seem to be there. A walkle is used to shift trays of small com ponents to strategic lo cations. (Huge machine in background is a four teen-station monster capable of performing as many as 56 opera tions simultaneously.) Note complete lack of overhead conveyor sys tem. LI A 26429 1 Tfc. Dependable? Versatile? These i must be, to provide carburetion pt^Hgnificant portion of the new car : th,,e auto plant, an engineer talks "diversity"--and the evidence Apparent in all areas of the huge still expanding) complex, both ,rs and out. Trek in from the reg dock, through the passenger jsembly, on to the truck chassis then out to the marshalling yard. see them all: high lifts, ie*, riders, narrow aisle trucks, el carts, special purpose fire and tour train tugger. Essena two shift operation, the whole ron is powered by an "AM-PM" : two sets of batteries, one set replenished while the other Recently, C. T. Heaton, .Manager of i Promotion and Development for lion Electric, said: "As a result of r accelerated activities more of our Homers than ever before are aware I the capabilities of electric trucks, f. i therefore, are buving them." Pb02 /Graphite, a tough, new electrochemical anode What makes a chemical reaction take place? There are many compli cated answers in today's view of the subject, but they boil down to electri cal force. This being so, it might seem simple to do away with heat and high pressure, catalysts and other standard chemical means and use electrical force directly to produce the chemical reactions required in a process. That attractive notion has been abroad for more than a century. The Hall process for producing aluminum is one famous example of its useful ness. But it has been impossible to apply to production of some chemi cals because the ferocity of electro chemical force required would also destroy the electrodes. Now, however, lead dioxide coated graphite anodes make it possible to effect direct electrochemical conver sion to sodium perborate, sodium hy pochlorite (the active chemical in Top of two 5,000 amp chlorate-perchlorate cells utilizing cylindrical anodes. The cell con sists of a 42 in. copper or stainless steel tube (the cathode) in which the lead dioxide plated anode is suspended. Cylindrical anodes 4.25-in. in dia. and 45 in. long used In the electrolytic production of chlorates, perchlorates, hypochlorites, iodates periodates, bromates and perbromates. common bleach), sodium perchlorate and sodium chlorate. Though this has all been done before, the electrolysis of sodium perchlorate, for example, required platinum anodes far more expensive than the lead-gTaphite types. Because of the high energy poten tial of the technique, its developer, Pacific Engineering & Production Co., uses it at Henderson, Nevada to make millions of pounds a year of ammo nium perchlorate -- a power-packed component of rocket fuel. Paper people are using the process to produce highpowered bleaching chemicals. "Electrolysis of chloride to sodium chlorate can be a batch or a continu ous operation," according to an article in Chemical Engineering* "Either way, the anodes operate satisfactorily on a range of salt concentration from near zero to saturation, unlike other processes where final chloride concentrations usually above 100 g/1. "Anode current density is varied to suit the cost of local power," the article continues. "Where electricity is cheap, current densities of 1 amp/ sq. in. are economical; for power costing more than 6 mils/kwh, the density is reduced. Current efficiency averages about 85%. At higher cur rent densities, power consumption is about 6,600 kwh/ton of chlorate pro duced. Average anode life is about two years." "New Anodes Show off for Chemical Producers," Anon., Chemical Engineering, July 19, 1965. --7-- T rr LI&2fc^30 . ---.w j MJJ 9.9It J V ' j A New Kind of Lead Roof ( Credits: For the University: C. M. F. Peterson, Director of Physical Plant & R. E. Collins, Assistant N Architects: Eero Saarinen, Associates, Hamden, C Conn., Anderson, Beckwith & Haible, Boston General Contractor: S George A. Fuller, Boston Lead Work: c 0. G. Kelley Co., Boston Structural Engineers: p Ammann and Whitney, New York Imagine a roof that changed its shape with variations in the weather. It happened at Kresge Auditorium at M.I.T. in Cambridge, Massachu setts. And it led to an entirely new concept in sheet lead roofing. The auditorium roof, finished in 1955, is a triangular dome of con crete, supported at three points on massive concrete buttresses and struc turally independent of both interior and exterior walls. It is the eighth part of a sphere. Its minimum thick ness at the apex is 3V2 inches: thin ner in proportion to its area than an eggshell. Originally, the concrete slab was covered first with a vapor barrier, then with 2 inches of insulation, next a 2-in. layer of cinder fill for acoustic purposes and finally, a finish made up of a clear acrylic containing a stone mix for texture. Chiefly as a result of movement, difficulties developed in this assem bly. In different parts of the dome, rates of expansion and contraction varied depending on the weather and the position of the sun. Since the insulation and fill layers were not bonded or secured to the structural slab, the movement in and between them resulted in an accumu lation of stresses which eventually ruptured the concrete topping caus ing cracks up to J/o-in. in width. In troduction of water into these faults led to further complications--vapor pressures, created from this trapped moisture, raised a series of "bubbles" as the passage of the sun heated each panel in succession across the roof. The consequences are not difficult to imagine. Conferences were arranged with various roofing interests and, in some cases, sample installations were actually built full scale on parts of the roof surface itself. The problem had to be solved. Sheet lead w* among the materials tried. It u J evident that an entirely new concepi in sheet lead roofing was needed. a The roof that finally evolved fro* this testing, design and conference was novel. The cinder fill was cijB through with continuous Vg-in. car* borundum cuts on 48-inch center* both ways. At the four corners ancB the center of each panel thus cre-a ated, a %-inch diameter steel studJ was anchored into the structural slab.l These studs were allowed to project! 34-inch above the concrete fill sur-i face and were then fitted with 4-inch 1 square stainless steel shields, slipped! over the studs and welded to them. I thereby tying together the concrete 1 topping and the structural shell, but 1 allowing the topping to crack along j the saw cuts. To the tops of these ] projecting studs a grid of J^'lnch diameter stainless steel wires was welded in a diamond pattern on 2-foot centers. Where wires crossed each other independently of studs they were welded together. Finally. 2-foot square sheets of 6-lb. soft lead were slipped under the lower "V" created by the wire grid and over the "V" at the top, thereby, in company with the next sheet, locking in a con tinuous wire support at each joint. Laps in sheets were 2-inches and all edges were burned. The roof system has now been in place for more than two years. It was finished in June, 1963. Repeated in spection reveals no serious fault nor defect and Mr. James Murphy, Di rector of the Auditorium, reports no maintenance costs of any kind have been incurred nor have any leaks developed. The acoustics of the dome, if anything, have been improved since the capabilities of lead as a sound attenuator are well known. T ***** III In designing and testing any new engine it is highly desirable to "look" inside to "see" what is happening. This is particularly true with a design M radical as a propulsion unit for rockets, such as the powerful nuclear propulsion reactor of the Kiwi type. \Then radiation from a particular part of the reactor core is measured and analyzed, radiation from other parts of the engine must be blocked off so that it does not "blind" the detecting instruments. The shield de vice that permits selective measure ment of the gamma rays and neutrons in the Kiwi is a collimator with com ponents made from lead and boron carbide powders. Lead is used for a gamma ray shield and boron carbide is added to suppress the production of hard gamma rays that would result from neutron capture in the lead. Scientists and engineers of the Critical Assemblies Group and the Materials Technology Group at the Los Alamos Scientific Laboratory* used a powder metallurgy technique to solve their design problem. The collimator was to be essentially a hollow cylinder with a funnel shape bore at one end. Taper of the bore could be changed (to permit scanning different areas of the reactor) by re placing certain parts. All of the parts of the collimator had to fit very pre cisely to prevent radiation leaks. Bismuth and boron or boron car bide were first proposed for the crit ical inner section of the collimator but a number of disadvantages in cluding expense ruled out bismuth. It was decided to make these com ponents from a lead-boron mixture. The mixture of lead with boron carbide is a novel combination in the field of powder metallurgy, but the method devised by the Los Alamos personnel provided compacts of almost theoretical density ready for a fine machine finish. The first step in the fabrication was thoroughly blending lead and boron carbide powders for eight hours. The lead powder was --325 mesh and 99 per cent pure; the boron carbide was --100 + 230 mesh. The blended powder was then poured into the cavities of steel-reinforced graphite dies and pressed. First, the powder was cold pressed at approximately 800 psi, then heat and pressure were gradually in creased to a temperature of about 530 F and a pressure approximately 1500 psi. Pressure and temperature were then gradually lowered in con trolled steps until the piece was re moved from the graphite die. The surface of the finished parts was a function of the finish of the graphite dies. Diamond tools were needed to give the parts their final fine finish because of the extreme abrasiveness of the lead-boron car bide combination. p ^f H301 The Kiwi reactor engine mounted on it* test stand at Los Alamos Scientific Laboratory. Individual pressed components var ied in diameter from 4.5 to 26.1 in., in length from 1.1 to 8.7 in., and in weight from 16 to 403 lbs. One of the problems that the scien tists on the project anticipated was density variations along the length of the longer components. This was avoided by pressing the part in three sections, then machining step shoul ders in them so that they would fit tightly together as a completely uni form assembly. The completed collimator assembly. The fead-boron carbide components line the hole through the center of the assembly. The outer surface seen here is borated polyethlene. * Source: lasod on the paper "The Fabrication of Lead-Boron Carbide Components for Kiwi NeutronComma Collimator" by H. Sheinberg, Les Alamos Scientific laboratory of the University of Californio, Los Alomes, N.M. LIA 2643 2 New bus station captures awards and economy through . . . HARMONY in Concrete and Porcelain Aerial view of George Washington Bridge Bus Station looking west to the bridge and Hudson River Palisades. Over 100,000 sq. ft. of leaded porcelain enameled extrusions, similar to the ones shown here covering the ceiling of the long-haul loading area, were used throughout the Station. The ceiling of the de pressed Expressway is covered with these panels With a flair seldom seen in public works projects, the new George Wash ington Bridge Bus Station--strad dling the famous bridge's Mew York approach--has earned both industry and public acclaim. The Station opened in January, 1963. Shortly afterwards, it received the Concrete Industry Board's 1963 Award as the best example of originality, concept and applicability of concrete. First U.S. example of the work of Dr. Pier Luigi Nervi, noted Italian engineer-architect, the design was conceived to complement the nearby George Washington Bridge. Of course, the Station also offers the latest facilities to approximately 12,000.000 annual bus passengers. The Port of New York Authority's own engineers provided the technical know-how and knowledge of func tional requirements necessary to translate Dr. Nervi's design into actu ality here. Colorful leaded porcelain enamel on aluminum contributes its share to both the economic and aesthetic suc cess of the new Station in several ways, too. A pleasing pastel blue in shade, these porcelain panels form an eye-catching color band around the perimeter of the Station at the third, or bus deck level. In addition, nearly 133,000 sq. ft. of porcelain enameled extrusions cover ceilim areas throughout the Station. Leaded porcelain enamel was user because it is the only way to achiev permanent low-maintenance color oi aluminum. The enamelers, Porce-Len Inc., of Hamden. Connecticut, spe cialists in porcelain enameling alumi num supplied over 198,000 sq. ft. porcelain enameled aluminum for thi< job. Mr. Robert S. Goodman, Execu tive Vice President of Porce-Len, notes that because most of the alumi num (all of which was 6061-Tl alloy ) was enameled on both sides w ith two coats, a total of nearly seven tons of lead went into the vitreous coating which his firm fused to the metal panels. The 400-ft. long by 185-ft. wide Station handles both short-haul com muter buses and long distance buses --each on separate platform levels. | Between the two is the Main Passen ger Concourse where, on a tvpical weekday, about 40.000 passengers wind their wav to and from work and other destinations. Rugged concrete trusses frame blue porcelain enameled aluminum pan els that ring the Sta tion and bus staging or turnaround platform. --10-- LIA26433 tfttt&iedtuty CdcU 'H a&aut dead A hull of a protection job has been I jofie on the famous wine tank ship ^5 Angelo Petri. An earlier issue of ' LEAD reported on installation of lead inodfS in April 1964 to prevent hull i corrosion. Now the ship has been dry- docked for a checkup after nearly a vear-and-a-half of exposure to sea, brackish, and fresh waters. The re,iilts: no corrosion damage to hull, ffg chests, or screw. The further re sults: contracts signed with Lock heed's Marine Services Div. for sim ilar systems on four more ships! So bumps in this highway! Magnetic levitation demonstrates a suspension principle which may be applied to 'floating" transit cars of the future. Ceramic permanent magnets, located underneath the vehicle suspend it slightly above its track. Lead in the magnets helps give them the energy to do it. Westinghouse transit engi neers believe the wheel-less "magnetic highway" has promise for high-speed commuter systems of the future. Diamonds don't grow on .rees. The attractive little ring holder is a lead diecasting. Flock finished, it shows the rings to best ad vantage in the jew eler's case. Anchor Alloys, of Brooklyn, producer of the gad get, diffidently ad mits lead was cho sen for this holder of precious baubles on the basis of econ omy. Color TV now looks better because of lead--The radiation-sensitive prop erties of many lead compounds have been known for years. Recently, how ever. several enterprising scientists have begun to take advantage of these properties. One example is the Plumbicon. an improved color pick up tube which is being used by C.B.S. Television cameras to pick up the Red Skelton shows on Tuesday nights and the Ed Sullivan programs on Sunday Evenings. The new pickup tubes and associated TV camera equipment were developed by N. V. Philips, the giant electronics com pany located in the Netherlands. The cameras are being assembled by North American Philips Company, Inc. (Norelco) of Mount Vernon, New York, their American counter part. Thirty Years Ago (The following item is reprinted in its entirety from a 1935 issue of LEAD.) Lead Register on Mt. Washington A piece of sheet lead was the first register of visitors to Mount Wash ington in New Hampshire. This lead was taken to the summit in 1824 and installed in a tent there. It was eight or ten feet in length, seven inches wide and the thickness of pasteboard. It was put around a roller made for that purpose by Ethan A. Crawford, Builder of the first stone cabin at the peak in 1823. An iron pencil was provided so that visitors might carve their names in the sheet of lead. This device would have provided a per manent record of visitors' names for it would be little affected either by age or exposure, but unfortunately it was stolen by a party of vandals a year after it was installed on the peak. i i l 1 CHANGE OF ADDRESS ADD ME TO YOUR MAILING LIST i (please circle one! PLEASE CHECK INTEREST CHANGE from____________ Name, title OF ADDRESS Company OR NEW Street f READER Use this side of City, state, zip code the coupon if you have recently changed To--------------------------------Name, title your address or if you would like to be Company added to the mailing list for LEAD Street i1 1 Architectural & building Design Engineer Ceramics D Radietion 1 Other (please specify) City, state, zip code LIA26434 NEW LISTINGS Soldering alloys Four page reprint covers solder alloys and metals they are most frequently used to join--both ferrous and non-ferrous. GENERAL Lead & zinc supply and demand Authoritative examination of the short and intermediate supply and demand prospects for lead and zinc. Two papers and discussion; thirty-five pages. Annual review--lead 1964 Detailed data and discussion of production, stocks and consumption. Review of events influencing or resulting from situation. Six teen pages. New uses for lead Design engineering data BATTERIES Something new to know about battery power New developments increase capabilities of battery trucks and truck programs. Four pages. Picture book of power batteries Industrial truck costs in a jiffy CONSTRUCTION Isolation of railroad vibration Histories of two installations in which lead UJ J 1BRARY JLUJLU \O3LFUTJEJC7HNUICJAJLU4INJIFJ"O1RM\ArTION The following publlcetloos ire mllable free of chirge unless otherwise noted. Send request LEAD INDUSTRIES ASSOCIATION, 292 MADISON AVENUE, NEW YORK, N. Y. i0 vibration pads reduced ground borne vibra tion in buildings. Eight page reprint. Practical lead sound barriers Twelve page manual gives specific wall con structions and performances, on-the-job and on-the-drawingboard details are included. Lead roofing and flashing 16 page handbook giving all standard lead roofing systems. High temperature lead joints Waterproofing with sheet lead Pools and Planters Isolation of buildings from vibrations Silver anniversary roofs Lead work for modern plumbing $2 per copy; $1.50 for 10 or more. Lead plumbing systems New uses for terne coated steel Use epoxies to line tanks with lead High speed lead plating Importance of lead in glass New electroceramic data Soldering and soldering alloys Lead sheathing for power cable Materials of construction review Corrosion data--lead & alloys Methods of lining lead tanks Cutting press vibrations Nuclear materials Radiation protection Anodes for cathodic protection Organo-lead job hunt ENGINEERING Cathodic protection of offshore structures Four page reprint describing lead anode pro tective system for a lorge offshore mining complex. Where to use terne coated steel Four page reprint summarizes the new indus trial uses for terne, a lead coated steel. Modern chemical construction Cleaning "hot" parts ultrasonically Piezoelectric transducers FINISHES Lead paint systems for a bridge Six page reprint describes lead paint syste used to protect San Francisco's bay bridge lead paint systems for bridges Decorative finishes for lead Red lead based paint systems Porcelain enamels: For aluminum low temperature steel Molybdate opacified enamel Glazes for brick UPON REQUEST, THE LEAD INDUSTRIES ASSOCIATION WILL BE GLAD TO MAIL "LEAD" REGULARLY, FREE OF CHARGE, TO THOSE INTERESTED, AND WILL COOPERATE WITHOUT OBLIGATION IN THE SOLUTION OF YOUR LEAD PROBLEMS. rtlKTZO IK T7.S.A. 157 Reproduced by letterpress from lead type. aun>i-*ALKBoii.u*, me XIW TO*X, X. T. "1 Mail to: Lead Industries Assn., Inc., 292 Madison Ave., New York, N.Y. TOOT7 Name, Title Company Street City, State, Zip Code Please send_________ TO REQUEST LITERATURE LIA26435