Document 85NxrroVM3nKMaLBkv7vgQzod

Aerial view of Doctor's Hospital. Pb for Md Modern hospitals are an accurate reflection of the great advances made in medicine and surgery, sanitary sci ence. and in public health care. Thev occupy a place of vital importance to the community. The best hospitals are clean, airy, well planned, and are man aged like business corporations. Prob ably a culmination in all these re spects, and the only one of its kind in another, is the recently completed Doctor's Hospital in Tulsa. Oklahoma. Built for a nonprofit corporation on a ten acre site in a residential area of Tulsa, it is in the 100 bed class. Since sanitary facilities are certain ly of major importance in a hospital, it is significant that lead was used as a major component in the plumbing system. Each guest room has a shower bath adjacent. All 59 shower compart ments have 4-lb. (1/16 inch thick) lead safe pans as waterproofing. Pans vary in size but all are made with 6 inch upstands. Top edges of folded, pig eared corners are lead burned I welded) to prevent capillary action of moisture between the folds damag ing the structure. All pans are protected with a brush coat of asphaltum against the corro sive attack of free lime in mortar beds laid inside them to receive finish tile. More than 5,300 pounds of sheet lead were used for the pans and for vent pipe flashings on the roofs. Such flash ings are also of 4-lb. per square foot sheet lead. Base flashings vary in size but all have boot sleeves one foot high dressed down into the vent one inch. 4 lb. sheet lead shower pans. Innumerable examples of flexible lead connections may be found throughout the project. To name a few: lead waste pipe on 70 lavatories and 10 drinking fountain fixtures. lead drum traps on 8 bath tubs equipped for hydro-therapy. lead waste pipe connections on all surgeons' washup sinks. lead connections on floor-set water closets and wall-hung urinals. All lead bends and traps are ``X.H." classification. Connections between lead pipe or between lead pipe and brass fittings are full solder wiped. Over 500 lb. of plumbers wiping solder was used in these installations. Joints in cast iron soil pipe are made with firmly packed oakum and filled with lead and calked tight. Seven tons of calking lead was needed for this part of the project. Architects for the building were Hudgins, Thompson, Ball and Associ ates and the plumbing contract was handled by the Oiler Heating Com pany, both of Tulsa and Oklahoma City. 2-- -- "- X&R mpu w Main feed lines that carry 13.8 kv power from the sub stations to the motor switches of the cold reduction mill. The technician is wrapping fireproofing tape on one of the cables. SURE-FIRE POWER FORA STEEL MILL ... twenty years to be exact! A cable termination beneath one of the mill's drive motors, partially visible at top. The four 15 kv cables being connected carry f3 3 fcv Dower to the motors. Pour 15 kv cables being terminated beneath one of the motors of the new mill. Note the large potheads where each power cable is connected to its terminations. Lead sheathing has been providing maximum protection for underground electrical power cables at a mill of U.S. Steel Corporation for over 20 years. During this service the lead sheath ing has had to overcome some natural obstacles. For example, the ducts are normally below ground water level. When recently faced with new ma jor construction projects, U.S. Steel again turned to lead sheathed paper insulated power cable. The recent installation of a sixstand cold reduction mill required that company engineers completely revamp the electrical power distribu tion system. Existing electrical power cables had to be replaced and rerouted around the construction site to keep other facilities in operation. In addition, supplying power to the new mill meant the construction of new ducts and the laying of cables. Over nine miles of lead-sheathed, paper-insulated cable were manufac tured and supplied by the Wire Oper ations of U.S. Steel for the cold re duction mill job. Approximately 37,000 ft. of 3-conductor, 350 MCM, or 4/0 AWG compact sector cable was used to replace the existing leadsheathed cables that had to be moved. These 8 kv rated cables carry 6.900 v --3-- to other mill facilities. Power at 13,800 v is carried to the new cold reduction mill by 12,000 ft. of 15 kv, 500 MCM, compact sector, lead-sheathed, paper-insulated cable!.. AH of the 8 and 15 kv is run through underground ducts so that none of it is buried directly in the soil. The 8 kv cable is about 2.30 in. in diameter and the 15 kv is 2.81 in. It is estimated that a total of about 86 tons of lead are used on the cables. The network of cables supplying power to the two 19,000 hp motors that drive the rolling mill is complex. Six cables carrying 13,800 v run from a primary transformer in a substation (that steps down power from 69 kv to 13.8 kv) to the switchgear for motor 1. The motor starting switchgear is about 1100 ft. from the transformer. Four 100 ft. cables connect the motor start ing switchgear to the motor. Motor 2 is served the same way except that it is about 175 ft. from its switchgear. To control stray ground current cor rosion often found near high powered electric motors and power cables, U.S. Steel power engineers specified that all cables be neoprene jacketed. Pos sible fire damage to cables exposed in buildings is minimized by wrapping cables in these inside runs with arc proofing tape. L IA26474 S'**?1 .. . /Ind 2uiet, "Too Sleek, fast, seaworthy ... and quiet, too. Not many power boats live up to that list of specifications. The noise from a high powered V8 or light weight marine diesel becomes more than a nuisance in most boats. LaMaria III, an elegant 46 foot twin diesel yacht, custom designed and built by John Holmes, Inc., of Osprey, Florida, is a remarkable exception because it is quiet as well as fast and sure footed. Boats like this are unusually dif ficult to soundproof. Transmission of noise and vibration through the frames and planking is one reason. Noise from the exhaust is another. And, of course, a major problem exists when light weight decks and bulkheads are asked to stop sound which would be blocked by a masonry or plaster wall if the same power plants were used on dry land. To minimize the structural trans mission, the engines were mounted on stringers isolated with resilient ma terial. To subdue the exhaust roar, the mufflers were equipped with re sonant cavities. This left one major area for improvement -- achieving tough, lightweight decking and bulk head construction with real sound stopping power. Designer Don Carter of the Holmes organization turned to Lead Indus tries for help and, working with data supplied by them, developed a struc tural system weighing less than 3 lb./sq. ft. which achieved 50 db (decibels) attenuation at 1000 cps. {cycles per second). And this perfor mance was turned in by the finished job--as established by actual testing of the finished boat. To achieve this performance, the designer settled on a double sandwich construction. A nailing strip was mounted along the inside of all frames and interframe members forming the deck surfaces over the engine room, as well as the forward bulkhead. Standard glass wool batting was com pressed into these areas and lead sheet weighing one pound per squar was fastened in place over the the nailing strips. A second glass wool bat was then inserte this, stapled in place with fiber screening, and a sheet of perfo^ aluminum with 25 per cent openi fastened over the whole. Lead Sandwich This sandwich plus the plyi structure forms the whole floor ing the engine room as well as < forward bulkhead. The after bJ head faces the area under the cf| cockpit. This gives it a low prw in noise reduction. All openings were entirely eld Typical section through the deck shows how one pound per square foot lead was used in conjunction with glass wool for soundproofing. --4-- LIA 2 6 475 Technician examines coated cinder blocks under the irradiation horn after treatment. j, plastic pipes or boxes except for major ventilator up to the flying idge. This long breather duct is 9 icided by a control panel and cur- on its way through the salon r* J therefore is not troublesome or -ould have been treated with lead Jed vinyl. Underway, the engine jin noise sounds like a huge water' as vi-: >ass this duct. On the ms bridge when a panel is reu-d, the same noise is heard; how-t it forms more of a novelty than * uisance and therefore has been left Oil re deliberately. P The interior of the deckhouse salon Hf] moderate contributions to acousideals. A heavy rug was most ef,os tive, but large areas of glass proWkt heavy reflections. However the trail results are extremely gratifyp. At cruising speed conversation * be carried out at normal levels lich with two lightweight two cycle 5 HP diesels is quite unusual to the least. Opening the very small tch into the engine room produces oise which is just beginning to be ihtly painful. Forward, in either of two private staterooms engine ise is even lower than in the salon, the flying bridge it requires quiet rroundings and concentration to ^ir the engines start. RADIATION CURED COATINGS Paints and plastics can now be cured without solvents or heat with a new electron irradiator designed for production line use. The irradiator, developed and manufactured by Radiation Dynam ics, Inc., Westbury, N.Y., will treat coated materials -- metals, plastics, wood, paper, textiles or ceramics. The result; it is possible to dispense with ordinary solvent and solids systems and to use resin monomers directly, polymerizing them in situ by radi ation. That means lower cost starting materials and denser coatings. Besides reducing coating cure times to less than one second, radiation elim inates heating, thus eliminating ex penses for gas, electricity, oil or heat lamps, not to mention elimination of possible heat damage. Conventional curing ovens often take 48 hours to reach operating temperature. The irradiation process also makes Essential parts of the irradiation curing apparatus. entirely new coatings possible. Ex amples are "structured and patterned coatings in a whip cream-like cons istency, and coatings with thick em bossed surfaces that are highly decora tive and provide amazingly increased strength to the substrate materials," says Dr. K. H. Morganstern, president of Radiation Dynamics, Inc. Heart of the new process is a small, relatively inexpensive particle accel erator of 300 kv, 25 ma. to 50 ma. beam strength, named the Dynacote. Power is drawn from a 220 v, single phase 60 Hz line. Operation of the accelerator is quite simple in principle. High voltage, brought to the head energizes a thoriated tungsten filament which emits a stream of electrons. The beam is focused, accelerated to 300 kv and magnetically deflected (similar to beam deflection in TV picture tubes) and brought out through a thin tita nium window at the bottom of the fan-shape scan horn. The work to be irradiated is conveyed directly under the horn. Shielding for the Dynacote is simple. Since the beam consists of 300 kv electrons it is necessary to shield against the Brems-strahlung or X-rays produced when the electrons are stopped by the work or other material. RDI engineers determined that if shielding is localized around the ir radiation area (feasible with a unit as compact as this) lead is the most practical shield material at the 300 kv level. One half inch thick sheet lead does the job (see diagram for typical installation). LIA26476 Maplehurst Dairy's Raymond Lamoureux makes first stop of the day with battery powered delivery truck. London's snow and winter weather does not deter this battery powered milk truck from it's regular rounds. yyr. Roger Martin of Maplehurst Dairy shows ease with which battery vehicle is "refueled." Just 6 hours on charger puts vehicle in 'go' condition. In London, an articulated vehicle, battery powered, carries 110 cases of pints, travels up to 32 miles per day on one charge. Ex press Dairy uses these for delivery to cus tomers as well as to distribution points. Once upon a time, just three or four decades ago, hundreds of electric trucks glided silently over the streets of American towns and cities deliver ing milk, baked goods, laundry and the like. George Raymond believes it could happen again! In fact, Maplehurst Dairy, which George and his family operate in Lincoln, Rhode Island, are so con fident that it WILL happen that they bought a battery powered van over two years ago and incorporated it into their fleet of 22 trucks. Thev have not been sorry. As George put it. the only thing he regrets is that these trucks are not yet available in quan tity in this country, though he is sure they will be soon. The electric at Maplehurst was as signed a regular route over the varied terrain in the Lincoln area: some fiat, some quite hilly. A few of the grades are severe. The distance it travels is about 26 miles per day, 6 days per week, with 222 daily stops and starts. The time required from loading dock out and return is 8V2 hours; George says that in more than 2 years of operation the truck has been in for repairs just 5 times that is less than average for hi * fleet! Oh, yes! There is snow and Lincoln in the winter time; b battery powered delivery truck ill p* (fit right on, covering the s ame tg as in summer, hills and all. Thi addition is a small comfort ^ prc gasoline powered, installed driver's compartment, and tr *> chains when needed. ,vp W e asked George about cost* kn he said that their records show operating and maintenance tola bti to just I6Vj cents per mile, sure that this is substantially less me for the rest of the fleet, although lbe are so many variables to be uni sidered in the other trucks thi tit hasn't been able to make an joc comparison. While we were discu: of this, brother Leo, the controller, pie out with a short adding machine un* containing just five sets of ont which totalled up to S86.69. "T1 DO said Leo, "is our entire outlay in maintenance parts on the elet fre since we have owned it!" What are the disadvantages? asked. They are few, according George. *'W e would like," he saicj, lor little better speed, perhaps up to from the top 25 mph now avails The truck would then be better 1 ba to compete in high-speed traffic, course, we just avoid that kind. 1 to traffic now, so we get along alrig! ter Also, the Raymonds look forward the new electronic controls now G< coming available and a few mS ot improvements in the braking sysS fo but they feel that their experieD * to will make a contribution to tb M developments and hurry them alos pi Our George doesn't know him, there is 'mother one in anotSJ u l_ IA 26 **77 Old method of cutting sleeves required hand sawing by man atop press. Press opera* tor had to receive sleeve lowered by rope. try that operates more than 3,000 "Iterv powereci dairy trucks every t {Jeorge Pearson, Director of Re- j| Transport, Expre>s Dairy Com, * Ltd., London, England, waxes ^thiisiastic about his beet of electrics ' Jclt (fl the slightest opportunity. In fact, t k [j considered an international ex- rhe|ert o'1 the subiect' and it's easy to h, Zf whv after a few minutes in his n fhere you will see an elaborate tr* .ill chart showing each vehicle by and number, area assigned, osti length of route, number of customers, lowldriver, sen ice record, and all perti tot* nent facts pertaining to the fleet. *. H Significantly, as the size of the fleet lesi Increased over the past nine years the costs of delivery decreased, on a be unit basis. The major reasons for this thl ire the pioneering that George Pearn jon has done in modifying the design scuj of the vehicles (most of which he im r, a plemented in his own machine shop), ine and the system of routing he uses-- f di one facet of which is to insure that "Tl no more than three miles is wasted (lay in getting to the first stop, and back elec from the last stop. His shortest route is three miles out and three miles es: back (a man walks this one, guiding Jinj a battery powered delivery cart) ; his ;aid, longest--51 miles and has 380 stops. 0 to Incidentally, the other two major ailai dairies in the London Metro area use 'er i battery powered vehicles, too, bring- ffic. ing the total population of such trucks \ind to more than 13,000. Lead-acid bat ing! teries are used exclusively. >ard We don't know whether these two ow Georges will ever meet, but they have mis one thing in common: enthusiasm sysla for a better way to serve their cus- rieirtomers. And we suspect that the > ti Maplehurst fleet, while it may not ap- alooi proach the size of the Express Dairy, lm, J "ill one day be as thoroughly sat- anot urated with electrics! New method automates entire cutting op eration on the press top and mechanically delivers sleeve to shop floor. Here shipping tube is fitted onto finished sleeve. Flying Saw Cuts Cable Sleeves New automatic cutting and handling equipment has eliminated heavy man ual labor in the production of lead cable sleeves at the plant of North ern Electric Company, Ltd. Lachine, Quebec. Northern Electric's lead sleeves are used in the field to encase the splices in lead sheated paper insulated cables. The sleeves are extruded vertically in a ram type lead press. Extrusion is continuous; the press is stopped only for recharging. In the past, the sleeves were cut manually. A workman on the top of the press cut the emerging lead pipe with a handsaw. In that fashion 80-in. lengths were cut as they came from the press. Then they were lowered to the floor on a rope. There the press operation bundled these stock sections together and they were taken to a power saw, trimmed, cut to length and individually packed into hard cardboard shipping tubes. Northern Electric's engineers suc cessfully automated the process using three synchronized and interdepend ent patented units: a flying saw, a transfer mechanism and an elevator. To begin the automatic cycle, the press operator sets the desired length on the controls then air-actuated clamps grip the sleeve after it has reached that length. The saw is forced to travel at the same speed as the sleeve. After cutting, the saw drops, and the sleeve is given to the transfer mechanism. When the saw retracts, the sleeve moves away from the press and ejects into the elevator conveyor. The sleeve descends from the ram top to the floor (about 12 ft.) and stops at the press operator's work position. He then slides the sleeve into a cardboard shipping tube and stacks it onto a shipping pallet thus completing the cutting and packaging in one continuous step. --7- LIA26478 New home of the Newark Star-Ledger--one of the most modern newspaper plants in the nation. !i THE STORY BEHIND THE HEADLINE i how lead-asbestos pads quiet giant newspa The daily newspaper we all take for "ranted is the product of a re they did the old World-Telegrarn room. markable manufacturing process. Con Lead-asbestos anti-vibration i sider that hundreds of thousands of copies are distributed to newsstands were one of the tools used bv W Ginsberg Associates in the Ni l and carriers within an hour or so of a late-breaking story. Reporters win job. "There's no one secret ingr< or magic formula in doing a goo I j Pulitzer prizes, but the press room crew and the machinery behind the of quieting a press." they say. " asbestos pads are not the who! production of the paper deserve some swer but they can do a good jol plaudits, too. they represent so little expense th Modern newspaper presses like never leave them out unless we ; those in the new home of the Newark have to." They explained that in Star-Ledger in Newark, N'.J. can pour cases presses have to be squeezed out a stream of 1,000 copies of a 50- such tight quarters that there isn page edition every minute. The sheer inch to spare. An inch, or more exactly an and a quarter, is the space takw i Section through the foot of e typical press post. by the pad. It fits between two billet plates as shown in the d drawing. Forty-four of these sup Pads are visible on the floor with more being installed for the 44 press posts of the New. ark Star-Ledger's new press room. the press posts of the Newark eq ment. They are each about 24) inches and bear about 150 psi. steel plate beneath the lead pad all the rough work of driving shims physical power of the equipment to imprint, collate and trim such a moun Lead-asbestos pads. tain of paper is awesome. But in operation such a press would i thunder out more than news were it not for the careful work of the engi STEtt, /urn neers who design the foundation and structure of the machinery. William Ginsberg Associates of New York City, designers of the Newark Star- Ledger's facility has been making a science of this work since 1930 when LIA26479 : jesses A SCULPTED ROOF -veling) to be done without injury i .0 the pads. . In addition, the second deck-- , here the pressmen work--is sup, sorted by smaller pads V2 inch thick. Hiere may be as many as 150 in a 'ypical installation of this size, j The power and inertia of these big | jresses is such that William Ginsberg [(Associates always recommend that I heir foundation be separate from that (>f the building. One important func- j `-ion of the pads is evident in the case "here both of these foundations go lown to the same bedrock. In this "ase, the pads are the sole effective break in the vibration path. Construction put in place of more than 450 million dollars in 1965 makes Giffels and Rossetti of Detroit the largest architect-engineer firm in the United States. Does such enormous size cause a lack of attention to those details which make up successful ar chitecture? Not so with Giffels and Rossetti. The United States Depart ment of Health, Education and Wel fare just recently bestowed an honor award for an Arts Center done by this firm in Rochester, New York. The award competition was jointly spon sored by the A.I.A. and an affiliate of the Ford Foundation: the Educational Facilities Laboratories, Inc. The Arts Center is for Nazareth College, a suburban liberal arts col lege of about 1,200 students. Three related units comprise the group--an art wing, a music section and an au ditorium. The auditorium dominates the ensemble. Its distinguishing char acteristic is the hold, sculptural sweep of its roof lines. The roof here, as in all three build ings, is standing seam terne metal. Mr. Gino Rossetti, its designer, says he selected this roof material for vi sual effect. Its lightness created fewer problems when used on extreme slopes and short radius curves. Its paintability allowed him to make the roof a part of the color scheme. A further bonus, of course, is the fact the choice of white for more than a third of the total roof surface (thereby reflecting heat) will return significant savings in air conditioning costs. A total of about 45,000 square feet of terne roofing was used. Flat seams were utilized on tight curves and standing seams on 30 inch centers else where. Substrate was % inch exterior grade plywood on furring strips. Rosin sized paper was the immediate underlayment for the terne. General Contractor for the work was John Luther and Sons of Rochester, N. Y. en'nii *1 --9-- Bin *r r * n! ;ns 4 m -WJJ !>!- - m Iinjujui LIA26480 i i Powerful metalworking tool, Model 6200 Mo lecular Laser by Perkin-Elmer. it produces 40 watts of continuous coherent infrared light for accurate soldering. COOL Soldering Developments It doesn't take much heat to make a lead-alloy solder joint. Nearly any heat source will do. But when it comes to soldering tiny electronic leads I.some no larger than a human hair), what do you use? The ordinary torch or soldering iron is just too big--the equivalent of using a blowtorch to light a birthday candle. Of course, literally billions of tiny solder joints are made each year --both by hand and with elaborate machinery (see recent issues of LEAD). In every case the object is to bring the solder to its melting point as rapidly as possible with minimum heat loss to surrounding components. One device that could fulfill these requirements admirably is a machine recently introduced by Perkin-Elrner Corp.. Norwalk. Conn. Called the Model 6200, it is a continuous wave gas laser. It has a minimum 40 watt output. Continuous output may be maintained at a minimum 40 watt level; however, the operator can select an intermittent energy level from a few milliwatts on up. Present output energy is many times that previously available--the equivalent of four mil lion watts per square centimeter. Enormous energy such as this can be very closely controlled in a laser and accounts for its great potential in soldering, cutting, fusing, and other heating applications. The Model 6200 laser's high-energy light beam is very narrow, thus ex tremely small areas can be soldered easily. With an additional lens the beam at the workpiece may be focused to a diameter of 1 mm--and mirror attachments mav be used to bend the light around corners for joining in otherwise inaccessible areas. 'Wavelength of the Model 6200 laser's beam is 10.6 microns--in the infrared area of the light spectrum "Of course this is a very useful area of the spectrum," notes Douglas Worth, Laser Product Sales Manager at Perkin-Elmer, "`and due to an `atmospheric window' at this wavelength the laser's power is not notably atten uated when transmitted through air." The laser, including its self-con tained power supply, measures 12" high by 12" wide by 60" long and weighs 175 lb. It operates on 115 Volts ac. 60 hz (cps). For safety and opera tor convenience. Perkin-Elmer's Mod el 6200 folds the beam down onto an asbestos sample platform which can be equipped with a micropositioner accessory that permits accurate place ment for fine work. AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA Full Color Viewing -- Controlled resis tance heating provides accurate selection and repeatability of soldering temperature with this Brown Model 1900 Production Microsoldering System. Produced by Brown Engineering Co., Santa Barbara, Calif., the unit requires little training for operation, and after initial programming, all opera* tions are automatically controlled. Finger Grip Control -- Instant finger grip heat control is a feature of this new re sistance soldering tool by Triton Manufactur ing Co., East Haddam, Conn. Choice of low heat output transformers permits application of accurate heat dosage without damaging delicate parts or assemblies. f)atene4ti*up OdcU Soda afoot .dead Skirt on a Mini Bikel The fl'jnn City Battery Bike, a British Innovation, is somewhat smaller than jhe conventional motor bike, but is intended for the short errand trip, or for commuting, and will fit in tight traffic and parking conditions. In ventor Russell Winn claims a top ,peed of 30 mph and a range of 25 Old dog/new tricks. Most any freshman chemical text written before World War I has a picture and a de scription of making pyrophoric lead --lead powder so fine that it sponta neously bursts into a shower of sparks when tossed in the air. A re port published in the New Scientist (London) now points out that the stunt has been dusted off and is being used in purifying gases by removing oxygen traces from them. It seems the lead is faster and easier to handle than other materials used until re cently. Lead sheathed cables don't have to have conductors to be useful! Shown here is one end of a tube made by Suddeutsche Kabelwerke iGermany) using conventional cable miles before needing a recharge of the 12 volt lead-acid battery. Recently. Mr. Winn has been in the U.S. seek ing market outlets, so you may see these on our streets soon. A lead telluride power source operating as a man-packed radar or microphone relay is being developed for the Air Force. The unit will be a 100-w, 28-v source with a life of over 1000 hr. and yet will be a 12-in. cube weighing about 20 lb. sans fuel and fuel tank. It will be a direct conver sion device in which heat from burn ing butane, propane or other liquid hydrocarbon will be applied to a thermocouple junction to produce electricity. Advantages: silent opera tion, easy startup, foolproof manual control and no rotating parts. techniques and equipment. The tube has all the advantages of a lead sheath --it is flexible and can be produced in long, joint-free lengths--and has been incorporated in gas distribution systems where a rigid pipe would be difficult to lay, for example across rivers. The impermeable lead keeps the gas in and the water out. The tube is 4 mm. thick with an in ternal diameter of 75 mm. It is made from a 0.04% tellurium-lead alloy and the various protective layers in clude galvanized steel strips and jute. 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 I I CHANGE OF ADDRESS ADD ME TO YOUR MAILING LIST I (please circle one) From--------- -------------------------------------------------------Name, title Company Street City, state, zip code To--------------------------------------------------------------Name, title Company Street ---------------------- City, stats, lip cods LIA26A82 PLEASE CHECK INTEREST Architectural & building Design Engineer Ceramics Radiation Other (please specif' f NEW LISTINGS CONSTRUCTION Use epoxies to line tanks with lead The lead matrix A 26-min color film describing the diverse uses for lead. Available for group show ings. Sound tests tabulated Eight page reprint details use of lead for noise control. Reviews common problems and the solutions that have worked. Lead to control sound and vibration Isolation of buildings from vibration Three reprints discuss a number of case histories of the use of lead-asbestos pads to control ground-borne vibration. Ways to reduce press vibration Practical lead sound barriers Twelve page manual gives specific wall Cleaning "hot" parts ultrasonically Piezoelectric transducers Importance of lead in glass New electroceramic data Lead sheathing for power cable Materials of construction review Corrosion data--lead & alloys New developments in organolead chemistry Latest trends in using organoleads for variety of purposes. Eight page reprint gives data and reactions. constructions and performances. Lead roofing and flashing Sixteen-page handbook gives all standard lead roofing systems. High-temperature lead joints Nuclear materials Radiation protection Anodes for cathodic protection FINISHES GENERAL Lead & zinc supply and demand Waterproofing with sheet lead Lead work for modern plumbing $2 per copy; $1.50 for 10 or more. Classification of inorganic enamels Two part description of inorganic gla enamels and application techniques. Three tables, six pages. Authoritative examination of the short and intermediate supply and demand prospects for lead and zinc. Thirty-five pages. ENGINEERING Soldering alloys Follow the safety line with chrome yellow Formulations and suggested applications Design engineering data New developments in soldering for chrome yellow safety paints. Eight I BATTERIES equipment and methods Five new soldering techniques are de pages. Lead paint systems for bridges Something new to know about scribed and shown. Best features of each are indicated. Four pages. Two reprints Decorative finishes for lead battery power Where to use terne coated steel Red lead based paint systems New developments increase capabilities of battery trucks and truck programs. Four page reprint summarizes new indus trial uses for terne, a lead coated steel. Porcelain enamels: For aluminum Picture book of power batteries Modern chemical construction Low temperature steel Industrial truck costs in a jiffy Method of lining lead tanks Glazes for brick UPON REQUEST, THE LEAD INDUSTRIES ASSOCIATION WILL BE GLAD TO MAIL "LEAD" REGULARLY, FREE OF CHARGE. II TO THOSE INTERESTED, AND WILL COOPERATE WITHOUT OBLIGATION IN THE SOLUTION OF YOUR LEAD PROBLEMS. PMNTID IN U.S.A. *87 Reproduced by letterpress from lead type. CUIDE-IALKHOFF-BCtt, INC. N*w Your, N. T. 1 ;| Mail to: Lead Industries Assn., Inc., 292 Madison Ave., New York, N.Y. 10017 ii Name, Title Company j 5freef City, State, Zip Code | Please send ______________________________________ TO REQUEST LITERATURE LIA26483 I