Document QgQEnb2DyxmKn31mVrb0mgn66

---------*----- -------- 1------- -- j[ LPG+ TML = Diesel Fue LPG, or liquefied petroleum gas, is an inexpensive fuel with many advantages TML, or tetramethyllead, makes it possible to use LPG in big diesel locomotives Exactly 30 vears ago a locomotive made history bv hauling the Burling ton's "Pioneer Zephyr" from Chicago to Denver in 14 hours. Steam engines took 26 hours for the same trip. In the intervening years, 28.000 diesels replaced .50.000 steam engines, the whole picture of railroading changed, and the Smithsonian Institution ac cepted the "Pioneer Zephyr s" orig inal engine for display as one of the milestones in railroad history. The reduced fuel and maintenance costs have saved the railroads about a bil lion dollars a year, according to ex perts in the field. With an eye to even greater savings in fuel cost, railroaders have explored the use of liquefied petroleum gas in stead of conventional diesel oil. It is quite inexpensive in those areas of the country where it is produced. In ad dition, its clean-burning properties suggest added savings in engine main tenance costs. But since it is not avail able at this cost advantage in all areas of the country, a successful conversion to LPG gas requires the diesel to run on conventional fuel as well. Lnlike the diesel fuel. LPG does not ignite when it is compressed in the normal diesel engine. In working on this problem, researchers of the Ethyl Corporation learned that mixing 10 per cent or less of diesel fuel with the LPG produces predictable ignition. In practice, they use just enough diesel fuel to insure good ignition and vary the feed of LPG to meet the power demand. Depending, as it does, on heat from compression rather than sparkplugs for ignition, the diesel must have a fairly high compression ratio. LPG does not work well at high compres sion. In fact, engine knock became violent when the engine was run at only 60 to 70 per cent of rated power. One way to prevent knocking is to lower the compression ratio. The com pression ratio required to stop the knock was so low. however, that the ignition could only have been effected with sparkplugs. And this was not practical because it meant that the engine could not be used with conven tional diesel fuel. This is where tetramethvl Ips u I r-nme LIA26341 in. Adding TML at a concentration of one milliliter per gallon of LPG, Ethvl researchers found that thev could achieve knock-free operation of a small engine at 100 per cent of rating. Testing moved on to full-scale engines. Tests of regular locomotive diesels running on the leaded LPG-diesel mix ture showed good performance 144 per cent better than without lead ) but the engine could not quite deliver full rated power without knocking. At this point the compression ratio was low ered from 13.6 to 11.0 -- not enough to affect the self-ignition of the fuel -- and the desired results were attained. Not only was full-power knock-free operation at 100 per cent rating at tained (using only 0.65 ml of TML per gallon), it was found that with 2 milliliters of TML the engine could be pushed to 20 per cent above rated load without knocking. A happy piece of research '`fallout" from the railroad diesel work is the prospect of better conventional LPG engines. Elimination of knocking with TML h as indicated the way toward hotter tractors and trucks. 'S'hen expanded services and a greatly increased staff forced St. Louis Blue Cross Hospital Service to move from its old quarters, a decision was made to build rather than to lease existing office space. Blue Cross wanted to obtain closer communication with the central city and accordingly chose a site on Olive Street, a main avenue to the heart of downtown St. Louis. Regarding the building itself. Blue Cross wanted maximum efficiency of internal space and. to provide some return on the investment, additional office space for lease. The architects, Hellmuth, Obata & Kassabaum, Inc., utilized the sloping site to create a raised court on a broad terrace in front of the building and placed a parking garage under it. The court is enhanced by a cluster of square plant boxes around a circular pool at the eastern end. In plan, this arrangement reproduces the familiar Blue Cross insignia. The 100-car garage neatly solves the problem of where the building's occupants can park during the working day. Because the pool and plant boxes might allow water to seep through the terrace to the garage below, a com pletely reliable water proofing mate rial was needed. The architects chose lead. Six pound sheet lead was used to line the plant boxes and pool, totaling approximately 16 tons. All joints were burned. The pan for the pool bottom was carried through under the pool bulkhead and then interleaved with the membrane waterproofing used in the remainder of the plaza. All ver tical flashings were burned to the lead underlayment to complete a watertight assembly. In all cases the lead was first painted with a heavy brush coat of asphaltum for protection against the corrosive effects of free lime in the cement used to line both pool and plant boxes. This is a standard precautionary measure taken wherever metal is in contact with fresh cement or concrete. Lead work for both pool and plant ers was done by the Corrigan Com pany, sub-contractor to the Dickie Construction Company, both of St. Louis, Mo. Jr 12'-0" R2" stone cap, anchor to curb at joints V* Depth varies TT e- Topping T wire mesh in Underwater reinforced light VT 6 lb. lead waterproofing under pool, Burn 6 lb. flashing to waterproofing. S-'Junction box & expansion joint dfc=H= ':>v. 'Membrane W. P. Section through pool showing the position of the sheet lead waterproofing. BATTERY TRUCKS GO TO SEA . ,,S any old salt can tell you. a ship doesn't produce revenue in port. On the other hand, she must load and unload fuel and cargo in order to re turn to the high seas. Thus, a quick, efficient turnaround is in order. And. one of the best ways to assure this is with an up-to-the-minute, integrated, materials handling system. Just such a system is in use onboard each of Grace Line's four new passen ger/cargo liners, the Santa Magda lena, Santa Maria, Santa Mariana, and Santa Mercedes. These 20,000-ton sister ships only joined the Grace Line Fleet in 1963, but their swift cargohandling capacity is years advanced. There are several good reasons why these ships can move cargo rapidly: through the use of containerization, palletized cargo, central controls and mechanized equipment. It will come as no surprise then, that the batterypowered fork lift truck has a part in this achievement. Using fork trucks, one man can move loads up to five tons with great ease. It is not uncom mon to whisk pallet-loads of such things as balsa wood, coffee beans, bananas, and cacao beans in and out of these ships at the rate of 60 per hour. Since the trucks are permanent -- they ride with the ship into every port -- there is no waiting for dockside equipment to get onboard, either. Each ship carries 12 of these work horse trucks -- one in each cargo hold, for a total of 48. This is all a part of a highly coordinated operation in volving the use of conveyor belts, ele vators, deck-mounted gantry cranes and a variety of palleted and con tainerized loads. Each fork lift truck holds 12 highcapacitv lead-acid batteries, enough to power the trucks through a full shift (eight hours or more). Besides full shift capabilities, these trucks must often emphasize their reliability in holds where the temperature ranges from 0 to 32 F. The use of economical lead-acid battery power which emits no exhaust gases makes these trucks ideal for use in an enclosed area with limited ven- --4-- LIA263A3 ... PORCELAIN ENAMEL TOO! I\ the construction of any public enclosure -- whether it's in a building or on a ship -- selection of the best wall finish is always a problem. Lsualb. the result is a compromise. I ntil recenth. there had been no finishing material available to answer all the requirements, both functional and aes thetic. Some of these are: strength, extreme durability, choice of colors, thin and light, flexible, and most im portant. fireproof. However, when Smvth Lrquhart & Marrkwald. Inc., interior decorators for the Grace Line's four new passen ger cargo liners. Snnla Maria. Sanla Mariana. Sanla Magdalena, and Santa Mercedes, selected wall paneling for the public rooms in these sea-going resorts, the choice was easy: porcelain enamel on aluminum. This thin, hard glass coating on alu minum is one of the most durable finishes to be found. And it's flexible! Enameled sheets were actually handformed around steel struts, trim and panel connector pieces. Color was no problem either. Hamlin-Stevens. Inc.. enamelers for the job. could have sup plied porcelain enamel panels in an\ color. Pleasing hues of blue, eggshell, beige, and "greige" were chosen. Finally, joiner contractors. Arno .Marine Div.. Kahr Bearing C-orji.. installed the panels. All four of these modern liners were built bv Bethle hem Steel s Shipbuilding Division. Internotionol cuisine makes dining aboard Grace Line's four new Sonias a gourmet's delight. LIA263A4 --O Close-up view of porceloin-on-oluminum showing how this flexible, glass coated skin was wrapped around steel posts without chippoge. a] 100 Tons * * of Lead Shot f T. Hr* Shields Fuel handling device for the Hallam reactor. The chamber filled with 100 tons of lead shot extends up to tbe lower platform. The entire mochine is 54 ft. high. (Photo courtesy of National Lead Co.) Reactor Loader One of the touchiest problems fac ing atomic reactor operating engi neers is the safe handling of highly radioactive fuel elements when they are loaded and unloaded in the reac tor. The principal danger is from highly penetrating and destructive gamma rays. In most installations where shielding weight and volume are important considerations, lead is the preferred shielding material for gamma ray protection. It provides equal shielding for less weight and far less space than most other shielding materials. The fuel handling device for the Hallam Reactor in Hallam, Nebraska operated by the Consumers Public Power District, was a design that pre sented unusual problems that were solved in a novel way by the designers of Atomics International Corp., build ers of the reactor complex. The total weight of the machine was so great that it was felt best to be able to add the shielding material as construction progressed. So, rather than use a large solid lead cylinder with the chamber for the fuel rods in its center, two concentric cylinders were constructed and the space between them was filled with 100 tons of lead shot. The soft lead shot was an extra pure grade and the size of individual shot ranged from 0.07 in. to 0.12 inches in diameter. The designers considered that the volume of shot has a shield ing efficiency approximately 75% that of a like volume of solid lead. In the unloading operation, for ex ample, the 54 ft. high precision ma chine travels on its gantry until it is positioned over the reactor sunk into the earth. A^Tien the reactor cover is removed exposing the core, the large diameter cylinder at the base of the handler is delicately lowered into the reactor and the fuel rod assembly is withdrawn up into the shot-shielded chamber, and safely lifted out of the reactor. The entire machine then travels along its tracks until it is over a waterfilled "canal" about 25 ft. deep. The spent fuel assembly which is both radioactive and thermally hot is then lowered into the water where it is al lowed to cool. After cooling, the fuel rods are transferred to shipping casks (see Lead Vol. 27, No. 3, "Radio active Fuel -- a Packaging Problem") and removed. The electrical distribution i ments for the 1964 New York j Fair cover underground disd and communications syste about 250 exhibits, street ornamental lighting effects, sj lar fountains and numerous oil trically powered features. A] reliable underground distributi work of lead sheathed powe will supply up to 85,000 kva| Fair. Lead sheathed rubber ns power cables have been utilize mammoth project according tfl Ortiz, project engineer, Syska I nessev, Inc., electrical consultin neers for the Fair, after thfl evaluation.* The factors the sidered included the soil, other environmental eondition>| Fair site; the historv of power j reliabilitv during and after th Fair; and the accumulated exp with lead sheathed cable in tn during the last twenty five yean "Most areas of the Flushing I ows site were, before the 19391 Mr. Ortiz wrote, "dumping for ashes and rubbish. The 193 tribution cables were of tbe| "Fair's Distribution 0*^* Ortii Elc-drka' heathed power cable 3HTS THE WORLD'S FAIR i rubber insulated type, protected with Substation supplying power at 27 kv. asbestos braid and installed in under All available data from the past Fair ground concrete ducts. The high was analyzed and modified to include i operational and maintenance cost re the expected electrical load increases <1 sulting from the use of this type of due to generally accepted higher illu * cable in the last Fair was not com mination levels and widespread use of t mendable. air conditioning. It was decided that "The installation of lead sheathed the most economical distribution plan cables and splices requires highly was to reduce the 27 kv supply from skilled labor and consequently is high the substation to 4160 v in three major i in initial cost as compared with non- substations from which radial feeders metallic sheathed cables. However, the could supply all areas of the Fair. s high initial cost was balanced by the More than 600,000 ft. (about 118 expected benefits of greater endur miles) of lead sheathed cable have ance, reliability and lower mainte been manufactured and supplied by i nance costs observed by Con Ed for Phelps Dodge Copper Products Cor f lead sheathed cables in this area. poration for the installation which is 31 Moreover, the electrical distribution virtually complete. As a rough esti V system is one of the many Fair fea mate, this amounts to more than 567 tures which were designed to remain tons of lead. as permanent Park improvements The radial feeder cables are in after the Fair. The lead sheathed stalled in an extensive system of cables' excellent service record in the asphalt-covered galvanized steel con 1 Fair's site promises the long life duits. The main 4160 v feeder cables f required." are butyl rubber insulated, copper The present site which also served conductor, with lead sheathing. Each the 1939 Fair will be improved to a main feeder consists of three single s large, modern park after the present Fair closes. This area, in the fran conductors 500 MCM, 5 kv, grounded wye distribution type. chised territory of Consolidated Edi In each conduit bank and through son Company, is served by the Corona all manholes a 500 MCM ground con- 4 *scurity, Aesthetics," by J. V. 28 1963 L1 A 2 63 4 6 ductor is installed and connected to the substation ground bus and to all individual manhole ground rods. The entire distribution system is thus pro vided with a uniform and reliable ground system. The lead sheath of cables is tied to the ground bus system in all manholes for maximum safety and operating advantage. Reel of three single conductor, 500 MCM, 5 kv, rubber insulated cables being positioned alongside a manhole. m F. Many individual pieces of sculptured sheet lead are used to overlay each window composition. After an individual piece is checked it Is motched to the leod comes of the window (right). The pieces ore then assembled and positioned (center). Finally, the gold leaf is "flown" on the sheet lead. STAINED GLASS UNDER A NEW LIGHT] Lntil recently the full glory of the ancient art of stained glass making could not be realized without the sun's ra\s flooding through a cathedral win dow toward the spectator. Today, through the genius of Henry Lee Willet of Philadelphia, there is a new art form under the sun -- and without it as well'. Someone has said that a stained glass window has two functions at the same time. One is adornment, the gen era! qualification of the interior of the structure: while the other is the func tion of "speaking." Obviously the stained glass concentrates on the first function while the representational window accents the message, supply ing adornment as an extra dividend. It is that "extra dividend" that ^ illet craftsmen have been able to capture no matter what the time of day or condition of -light. The spectacular new technique in volves soldering sculptured 3-lb. sheet lead overlays to the basic lead cames which ordinarily bold the stained glass in place. These overlays are formed in relief and then incised with carefully formed and -located slit- of varying widths which allow the light to shine through the richlv colored glass dur ing tile day. The "halation" of light through first the glass and then through these slits allows none of the beaulv of the glass to he lost. At the same time, the sculptured lead, c o y ered with gold leaf, fulfills the repre-1 sentational function of the window, in I silhouette. It is at night however, when the glass normally is dark, that the interior lights reflect the golden design yvith startling intensity. Thus the win dow' functions both by dav and bv night. Actually the art of metallic sculp ture is'also an ancient art. The Y\ illet Studios have simply combined the two venerable art forms and haye added the 23 Karat gold leaf to ghe the bril liant metallic night effect and the art fully placed incised slits in the lead which permit halation of light during the dav. Cutting masts from 3 lb sheet lead with rsn elec tric -saw. -- :l 3> \ Sculpting a mask "irvlow relief ty hammering a wooden stick along scribed line* bn ffoe leod. LIA26347 -- a new weapon against corrosion Modern automobile and truck de signers are turning more and more frequently to "unitized body" con structions. These unitized bodies elim inate the conventional heavy frame as the main source of structural strength and rely instead on closed tubes, box girders and irregular shapes formed integrally in the body sheet metal. While this construction does solve s number of problems for designers, it has also presented some new ones. Chief of these is rust and corrosion -- compounding problems, of course, as metal thicknesses diminish. Recent tests on lead pigments sug gest wavs to provide protection for ferrous products with light structural members and for that matter, most other metal products demanding high corrosion resistance.* Dip priming has proved the best method for unitized body construction because it is the only way to get to the hidden surfaces where water, slush and dirt can get in through spotwelded seams. Water thinnable paints are preferred for the operation be cause when they are heat dried the pigments dry uniformly in place and there are no dangerous volatile sol vents. In heat drying, the metal is heated unevenly so that there are hot and cool spots. Under these condi tions, the solvent thinned system will evaporate solvent from the hot por tions and condense it on the cooler areas. The condensing solvent almost completely removes the paint from the cool spots. In addition to solving this "selfremoval" problem, water based pri mers reduce fire and health hazards and are unaffected by moisture in the air or on the product. Gist of the LIA tests: lead pigments improve the performance of waterthinnable paints, whether applied by brushing, spraying or dipping. Photos of the panels shown here after ex posure to salt spray for 250 hours show how several of the lead pigments fared as contrasted with a panel coated with the non-lead primer and sub jected to the same exposure. The re sults after 2000 hours were even more indicative of the value of the lead pigments. In the evaluation of the primers about 65 different lead compounds were tested in typical water-thinnable ferrous metal primers. The different lead compounds were substituted on a volume basis for the original pigment of the primer. Test panels were sub jected to as much as 2000 hours of salt spray and the paint was then stripped off to show the extent of rusting. Test panel results after 250 hours of salt spray. Paint film has been stripped away. Officio/ Digest, Journal of Paint Technology and Engineering; Feb., 1964; "Anticorrosive Lead Pigments in Woter-Thinned Ferrous Meta! Primers"; E. J, Ritchie and H. J. Hughes. --9-- L <?634fi Special Materials for Noise Control Long before the first "acoustic ceil ing" was thought of, the Roman Em peror Nero was strapping lead plates to his chest to improve his singing voice. This historical curiosity has hardly anything to do with the modern practice of noise control, but it does illustrate the intuitive knowledge we have of lead's mass and limpness. Lead doesn't rattle or ring. Today, "soundproofing" usually means adding light fibrous materials -- ceiling tiles, carpets, drapery -- to the treated area. And while there is no such thing as soundproofing by any manner of treatment which might be practically considered, the sound ab sorbing qualities of these materials can be a great aid in many typical problem situations. Lead, by contrast, cannot itself ab sorb noise to any usable extent.* In stead it is used in two other ways. First, it can block the passage of sound waves from their source to the ear. It is the most efficient material com monly available for this purpose. Sec ond, it can be used with suitable soft materials to damp the mechanical vibration of metal or other surfaces which set the sound waves in motion in the air. One common use of damp ing compounds, an example which does not make use of lead, inciden- LEAD MATERIALS FOR ACOUSTICAL USE MATERIAL Lead sheet and foil DESCRIPTION PRINCIPAL USES usual thicknesses for acoustical work ore 0.001 sheet lead is used alone and in laminates as to 3/s2 inch a barrier AVAILABILITY sheet & laminates commercial foil has been used with viscoelastic cements for damping experimentol Lead asbestos anti vibration pads hermetically sealed lead envelope with asbestos in building foundations, machinery mounts, and lend or steel sandwich fill. Size from a few wherever a vibration path through a structure inches to 6 x 10 feet and larger. Usual thick- must be blocked nesses are 1 to 3 inch. commercial Flexible leaded plastic sheet with or without fabric reinforcement. From 0.005 self-adhesive ond cemented types as damping commercial and military to more than '/8 inch thick. Vinyl and neoprene materials in office equipment, submarines, other most often used. Vinyl is available in tinted, military uses. embossed, or printed finish. free-hanging or laminated as barriers in air- commercial and military craft, marine, architectural use. Damping tiles usually l'xl'x'/j" weighing 4 to 5 pounds, damping structural steel and heavy machinery Epoxy or urethane with lead or galena loading commercial same dimension weighing 4.5 pound neoprene ship hull damping loaded with lead shot military Casting compounds Trowelling compounds epoxy loaded with leod or galena potting, filling complex voids epoxy, neoprene, urethane loaded with lead or damping structures, surfaces, resonant members, galena transformer core laminations, rattling panels, power steering squeal commercial commercial Damping paint sealing cracks in noise barriers, closing openings for wiring, piping, etc. fine lead powder in hypalon vehicle. Compatible reducing "boigggning" in large areas of light with selected finishing topcoats. sheet metal commercial commercial Miscellaneous fabricated sheath of neoprene with loose lead exterior sheathing for submarines shot in sealed compartments military acoustic curtains and doors general architectural commercial It con enhance absorbent materials, however. A thin backing of lead on acoustic tile lowers transmission of sound through the tile ond insures that sound will be reflected through the tile after its first pcssoqe. H jhuf up, already! NASA confidently pregdirted that communications sateljjjf Relay 1 would cease to transmit Jurin? Dcember 1963, The cutoff de^ was a lead wire in bath of corro de electrolyte. Perhaps NASA should jjjvr chosen some metal with less abil|fy to withstand corrosion for. as this fatue of Lead goes to press, Relav I continues to beep loud and clear! Icttery powered industrial trucks are the fest tvpe for use in such dangerous jreas as those involving flammable liquids or vapors, gases, combustible Just or easily ignited fibers, according to Associated Mutual Fire Insurance Companies. Conventional lead-acid battery powered trucks do not use a combustible fuel and are safe for dust *nd fiber areas. Special trucks with jpark enclosures, type EE, are used for all but the most dangerous flam mable liquid-vapor-gas areas. Another special type. EX, is explosion proof and dust-tight and operates safelv in the most hazardous environments. Of oil the lead-acid battery powered fork lift trucks manufactured in the Lnited States in the last 20 rears. 90rr are still in service. International Lead Conference Proceedings avail able - The 350-page, illustrated volume of the conference held in London in Oct. 1962 include 23 papers on lead cable sheathing, storage batteries, ra diation shielding, research and lead and lead alloys in the chemical indus try. Copies are $6.50 post free from the Lead Development Association, 34 Berkeley Square, London W 1, Eng land, with payment to that organiza tion. Whose stock is "hot"? More radioactivity goes up the stack of a coal-fired plant than a nuclear one according to Mer rill Eisenbud, professor of industrial medicine at N.Y.U. ``For example, a 1000-Mw coal burning station will dis charge about 6 millicuries of radium per year, assuming optimum practices for removing fly ash from waste gases. Making allowances for the differences in their biological and phvsical prop erties, this much radium is equivalent to 1,500 curies of krypton-85 and 1.2 curies of iodine-131, the two most sig nificant isotopes in gaseous wastes from water reactors. Amounts of Kr-85 and 1-131 actually discharged from reactors are much less." Improved wiper motor. A ceramic perma nent magnet (left) has replaced wirewound stators (right 1 in current Ford automobile windshield wiper motors. The magnets reduce weight, simplifv servicing and increase motor relia bility -- plus less heat and more shaft power. Most permanent ceramic mag nets such as this are barium ferrites modified with certain additives . . . among them lead. Thirty Years Age Grim evidence of the value of red lead for protecting metal was seen when the burning liner Mo t t o Castle was beached at Asburv Park, N. J. One reporter wrote: "On the sides of the vessel the paint was blistering and peeling. Great flaps of it had come loose and were moving in the breeze. The ship had been black to the water line, and as the paint dropped off. it revealed the red lead beneath." And this was bv no means derogatorv to the black paint because the heat of the burning ship was so intense that iron and glass were melted. CHANGE OF ADDRESS OR NEW READER Use this side of the coupon if you have recently changed your address or if you would like to be added to the mailing list for LEAD CHANGE OF ADDRESS ADD ME TO YOUR MAILING LIST (please circle one) PLEASE CHECK INTEREST From______________________________________ _____________________________________________ N a !t t e , t e Company Arcrmec + u'c! & budding Street Design Engineer __________________ _____________________________________________________________________ Ceramics City, 2one, stole To~ Rcdiotion Nome, title Compa ny _ Other (pleose specify j L TA26350 i NEW LISTINGS The picture book of power batteries Pictorial presentation of the variety of trucks and tools powered by batteries. Design dato and discussion of battery power performance and economics. Twelve pages. Importance of lead in glass Comprehensive report and survey on use of lead in glass. Bibliography of over 600 ref erences. Sixteen page reprint from The Glass Industry. New data for electroceramics research Two page supplement to "Lead in the Ceramic Industries," provides liquidus and sub-solidus in the system Pb0-Bo0-Mg0-Si0a, and other data. GENERAL Discovering the beauty of lead New uses for lead Design engineering data BATTERIES Electric delivery trucks Truck costs in a jiffy Three nomographs for estimating costs of gas or battery powered industrial trucks. The choice of battery systems CONSTRUCTION Pools and planters Description and design details of seven mod ern lead lined pools and planters. Lead wall reduces noise Effectiveness of partition construction in re ducing noise is described and evaluated. Removable walls with lead lining Isolation of buildings from vibrations Silver anniversary roofs Building construction bulletins 2. Specifications--lead shower and safe pans 3. Specifications--chemical laboratory drain age systems. Lead work for modern plumbing $2 postpaid, $1.50 per copy in orders of 10 or more. Profusely illustrated 164 page text present ing clearly to the plumbing student the nec essary tools, procedures and methods. Lead plumbing Seamless terne for roofing Sheet lead for roofing and flashing lead as a concrete filler lead-asbestos antivibration pads Permanent color for lightweight block ENGINEERING Soldering and soldering alloys Detailed survey of solders. 8 page reprint. Lead sheathing for power cable 24-page design guide for lead sheath power cable. Transformer noise reduction Materials of construction reviews Corrosion data -- lead & alloys Methods of lining lead tanks Cutting press vibrations Nuclear materials Radiation protection Low temperature enamels for steel Thermal expansion data -- lead com pounds, two papers I, II Pb0-Fe203 Phase Relations Dielectric behavior of Pb-, Ba-, Sr hafnate systems Lead to control sound and vibration Anodes for ship protection lead glazes for brick New class of lead-base alloys Continuous extrusion press for cable sheathing FINISHES Decorative finishes for lead Red lead based paint systems Properties and compositions for 24 formula tions ond systems for o wide variety of uses ond exposures. 31 pages. Lead molybdate opacified enamels 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. _ e-w hi _. Reproduced by letterpress from lead type. PUNTID IN U S.A. pu r l is h er s p r in t in g -- r o g er s k el l o o c c o r p LONG ISLAND CITY 1, N. Y. "1 Mail to: Lead Industries Assn,, Inc., 292 Madison Ave., New York T7, N. Y. Name, Title Company Street " City, Zone, State Please send w LIA26351 TO REQUEST LITERATURE