Document DMp8qyD3RpmDko0wz1JzgdOpB

HOW ABOUT A SHINE? Just spread on DuPont New Car Wax, and wipe off for bril liant paste wax beauty. Your friends will notice the difference ... so will your wife. And you'll take a shine to the way it cleans, waxes and glazes in one easy application. New Car Wax takes the work out of waxing . . . leaves you time for weekend rest and recreation. It gives long-lasting protection, too, plus extra weatherproofing with silicones. Look for it in the brown and yellow can wherever auto supplies are sold. Treat yourself to these other DuPont beauty aids for easier care QUP0N7 DISSOLVO AHO AOAO CM MMOVIH Safe way to remove road oil and tar Washes away dirt, but not protective wax coating Makes chrome sparkle and removes rust For fast, easy cleaning of white-wall tires Cr ;' MST C*Sr Color-enriching formula cleans bright as new BETTER THINGS FOR BETTER LIVING . . . THROUGH CHEMISTRY If you've pushed a cart through a like a gentleman to let your wife do it--you cover this month. He's been keeping tabs on you and your neighbors as you go about the serious fausi- It ,,, Toe fact that Du Pont makes cello- pioneer tJ, b. i1r11i fi,,tj jU3I.ST_fc fv,,.3-> *%Jt** ^ CA. O ..A matter of fact-- inspired this cover. Cello phane and the supers go together like cheese and crackers. Our lead article, writ ten for us by the editor of Progressive Grocer, wraps up in more detail the big part transparent packaging plays in the f*. S...-DELETE ONE IflOKE After the story on pages 14 and 15, "When do you drop a product?", had been completed and approved, Du Pont announoed the Bale of its tong-established "Youtube" ventilating duct business. "Du Pont will continue to manufacture the base material, `Ventube' rubberlied '''clotli,M' the press release said, "and Hinover Industries of Meriden, Conn., will manu facture and sell the finished products, flex ible tubing for underground ventilation and The list of Du Pont products, we again eminded,.can- be -as- dynamic as a growing child. We got the feeling you had to move pretty fast just to keep up with current developments. Operation Deepfreeze, said press ac counts reaching Martinsville, Va,, was hav ing trouble with airplane skis that froze fast in the snow down at the South Pole. So Martinsville High School sopho more Jane Gregory took a hand in matters polar. She approached Julius Hermes of the Martin Processing Co., a film processor, who suggested that a surfacing of Du Pont "Mylar" polyester film might make the skis ........ Experiments ""With' several"' 'films.hofe.. him out. Jans's ingenious working model "Mylar" emerging cleanly from supercooled chunks of "snow." Last we heard, Jane and her model were off to Los Angeles and the National Science Fair, after having won state and area competitions handily. "The move;" said Director of Sales ,, -Hr* i Scenes from America's Indus trial childhood 8 Lift for a leftover 9 Remington's Humane Stunnei 10 Maintenance memo: try nylor 12 Small rivets for a Mg bomber 12 Know how ... to finish furni- 14 When do you drop a product? 16 Havana builds a prefab tunnel 18 Life afloat 19 "Dacron" sets nautical style Your vessel and the ieej i|-I1I j 11-- 'Bye, 22 up 28 Mai 28 Dairyland bristles with "Tynex" 32 Longer life for work shoes and FEATURE 30 What's New PHOTO CREDITS *n of To m. aim Inc, PiliO 111, top. and Puiso 111, topi siurtaiy Convair Dij!, 3rsmA III. l, bottom rigid: courtesy Walter Kidde Nudeur ..Toinsiire" ..........lly to; lidilor, Du Pon h im! old iidclrSB Willi t. . . t address label. Post a(lisa will not forward this ninpi, w,hm unless you provide extra pollute. GORDON 11, KESTER Editor Copyright 11167,B.I.ciu Foul,do Nomour*Sc Co., "" WIBIngion,'Dataware Ml nghta rwvsCTlii* nwjpixlne or parta thoroof may not bo roprotluood In any form without parniinuton in writing from the publisher, printed In U, 8. A, r ' ;;i: [: : 1 i : i} : i > \. : '.r i i .: . W: iiiMi j;.- ?:* > i :.; : . i.: i . opp-'T ; 'i; , fill- i P\ T:-' i i< \ * < }`-'r Vi'1.] V,'! i Vs Vi sYsO\ i w iVift V s,: 5- r.i \ i m: i : `: > . : sj i : >, 1 i ! i i-1 I r^; , ' '. :! :. I i !!<:! I : -i > i!: I ` c ' J : i V- ! li! > '' >. :........... .:\ i : i: .*;*! i :c I;:. j ::`j< r r`; : i i r ; :.!..{/. ' y. ! >t s> *5 s S v: i \1` 1; i _ * l|.,ilr /> \ ! .; < >, \; ii j : -; . 1! ' : i: i. I i i - i i>: >; !. ! , : i!::; "ii i'i i: ' ;::>; ! I P- j i..; 11:1. i |\-: m: `. :Vm . : ! i::::: .... ..................... : i i f . . u:! =-: in:' ivi'.wili' ['u rli ,*i-\'V : . * i j I; 'Y'j ... . : \ i i ! i i< ;' `s : < i. {>.;'!!! I i . ] i I; r : . i . :! i : ! . ;c s \\ " ; "!. 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I !..>! ;:; 5 j !:: f: j ! ! : i. i i i ;!: s i i i. >i; I !:; M !;>.' | 'i i >> -V !;:i i ;> " ! >: l ii '1 : i f j ii-'.-:'.- ` if -i;} si : ; i!:: : I i i i ! i . : i: : 51' i is i. :Si . <::! |f i ! s i : "a i :; | s i;:: 11. .: / i ; it ' i 'i; i I ;; i . i:: . '<' s's . ii i iu'-i ; iimiv i ll:iir,1. ;; > ? !}* j i, \ i i j ii ! ;. i : I i , si:.' : >i': . {{ > i si i i >' :\;*n !<mh ! : j ?t i i:: \. . . i i : i r i ...;: i i: < * S i > l. : : c >. s :-i s : i ! j - t it >;} t r \ i ' v i i <, j j i t:i }>i j. ;c < .! ; i i : f. i i: i11 . - : i,; i s \ . J J i j :. i s I s* ^ * : ` s s : \ < < M Ell MUM 11RII OM E 1 nt HIM Oi lilt, mit, imuMicb is, .-uiwnyidinmoethyl methacrylate, an aliphatic tertiary amine called DEAM for short. Its polymers, copolymers and their s,,alts s,eem well equipped lor roles as disp: ersants, , floeculanta, emulsiIters, stabilizers, protective coat- and add acceptors. What's more, *4,1i4i.l4U%4 f* t11inc*1n1 i4vvtatvr<fliiLmUisi eit f4n0 ftllliwp dUUoUn hUli<*y* hUnUf#iI%d1 f* o4# ltatliinti t4h1 tev the makers of pharmaceuticals. ln laboratory tests, itnloaded, syllbne-cured reslns exhibite(1 vimisuttiiy high heat distortion tem- ^ Abo, a laminate containing a sulfonec` ured. r,,e,,s.in s,ho,wed, ,,a much hkiig,,her modulus at elevated temperatures than a similar laminate pre- a m ......AND..NUMBER ...Tl.I.ltEE benzenethiol. This aromatic thiol readily forms persulfates, hydroperoxides, azonitriles and heat or light. Solution polymerizations have been run in a characteristic of aromatic thiols. Pentachlorobenzenethiol's chemical structure p* re1pare, d by , polym, er,izin,g, th,e, mon.ome,r as a. salt (e.g., the acetate, hydrochloride and carbonate), or as a quaternary mediate for agricultural chem'ical,s, ir a, i eluding vinyl acetate, vinyl chloride, vinyllidene chloride, acrylic and methacrylic acids, other aery- sibie advantages of DEAM in a wide variety of applications: Carbon black remained 100 per cent poly DEAM acetate was or silica in Jlf, It'A .. .-j8| b I5CHA3 Ul Vt ti n. one--were tough, trans casting, laminating and adhesive formulations. A new museum depicts gome of the little-known beginnings of U. S. manufacturing fhe story of America's industrial growth, often over shadowed in history texts by the rise and fall of political movements and personalties, is being told graphically at the new Bagley Museum near Wilmington, Del The muse um, opened formally last month, uses exhibits and work ing models to tell the economic history of the immediate area. In the process it gives visitors a stimulating glimpse of the inventive genius and plain hard work that created the nation's present standards of plenty. Located on the bank of Brandywine Creek, the museum is in the heart of a scenieally lovely and history ... rich 'area,'" All "during- the-' late eighteenth and early nine-.. industry, this valley was a busy manufacturing center. At the height of its greatness, the creek furnished power for more than 100 mills that turned out flour, black powder, textiles, paper, lumber and other necessities of a burge oning nation. _ , , . battlefield of the Revolutionary War. This proximity makes its point: Political Independence could be declared and fought tor, but it took long years of patient labor along the Brandywine and in other industrial centers to loosen Europe's economic stranglehold. The valley already had reached its peak as a flour milling center when lleutlilre InSnie du Pont de Nemours arrived in America from France on the first day of the nineteenth century. In 1804 the first kegs of in Font's _ ; as the lead ing industry. For 117 years the mills on the Brandywine supplied explosives for building roads, bridges, canals and Five years ago members of the iu Font family gave liS acres of the old mill area to a nonprofit, educational corporation, the Eleutherian Mills-Hagley Foundation, An endowment from the Du Pont Company made possible the planning and construction of the exhibits. Designers have taken advantage of new techniques to vary their nres- entation and create a "guide-youraelf* industrial Museum visitors get a sweeping view of the " wine valley through a contourjnap, and they corded narration of its history. ' "" times through the early days of powder making. Actual gears, millstones and archeological finds also are displayed. Especially notable are the working models, one of which depicts "old process" flour milling and another the ingenious automatic flour mill designed by Delaware Inventor Oliver Evans. Largest of the dioramas shows the Eleutherian Mills area as it looked in 1808 after the Mack powder factory was in full operation. From the museum visitors walk the short distance to the Hagley Yard, where At ."Eleutherian -Mills, -E,. L -iu Font's, home-, and his. first., office building are standing, and water spills through the raceway he designed. The Hagley Museum and its historic grounds fill out the major attractions of the Brandywine valley, already a favorite of tourists thanks to the battlefield, the outstand- Wilmingion and the splendid Longwood Gardens near Kennett Square, Pa,, with its fountain display. except Holiday, as a textile mill, 7 -v r il V 1% l I It i: I HJ V t } hi ihi l itiiiii t ' \it. Hit i ('*"> \/{> / n>!ii (/.; sit <'! \S >; > / fv - /.* i! fit'i sail it Hi ii' it riki-1 i 1 il>; f i i it i( t iiii t. t. i : c : i i *: s > ii I: >1 ' :, h m i sj i '.!!: f i ; j i i ;< ' ; n ; : = > : t.: i i :: i ii . : . : : r : i;';:lip- >' ' i i ';V:! ^ ' f i-; . : , i>;i :: j )*; i !I . : K i I f :i i; mui diesei f'ut'is. ; ! ! > . .'!;!>.! i i '<> ] .; * : i^ ' ! '1 i-'i : A i !: i Ai. ! !.-! i .. V ::. i i :v , i : :.r; ;f i*. : \ j .. {s i | i'n-'i.--: !i;i< : : u ii:::1! I i !\ S.'! s: i. ! > i i 1 i:! : i!f i'. i : l ' \ i< ; ; ; :f i ! i. . i). -i. C I h `:`l ` . : i `t. i > 11 i 1 \ [\\rl \. \ i-.: i. i - ii !!>'< si i :; j >\51'! \ k V !';! i V: ; i !i i : i i<: V i i jiM- I iI i i ('i' : i ' : I i ^ s A !!!!;: ;:: > f ] .i :: i;: .1 iv i i l! i; f i! J -1 i. di'!.' i h'!< :' :> i'.j ..!;! s $: J: i { ' i i ! ' 1 f !: ;,({ : I i f V.'S'j s-i \ 1 i o:| \'i`. ,-A\{ i \i i . > .<*{. i i d \ ' ! i: \ o \ \ - i =;; 11. i < J >! L S i .'i :i y\- I u<! :d ii:'. the sludging often is accelerated when different stocks of fuel are mixed. Other problems besides sludging are manifold, as Du Pont Petroleum Laboratory researchers learned from a survey last year. More than half of the heavy oil users canvassed reported difficulties like nozzle fouling, flameout and loss of pump suction. The chemists found, in fact, at several Du Pont manufacturing plants. Maybe, they theorized, FOA-2 could be as beneficial to the black sheep as to the white. Perhaps its perform- ""nee.as ^ stabilizer.and-sludge-dispersant.in.home and'" diesel fuels would carry over to residual oil. Field tests at a number of industrial installations and institutions soon bore this out. FOA-2 in small quantities--30 to 60 pounds per 1,000 barrels of fuel--caused marked changes in the behavior of residual oil. Sludge-clogged strainers, common among residual burning troubles, were returned to use for much longer ______ ' ... J 'll. . _ .. J: 1 ,, f .... ? ________ JL _ J7 Jt. to JL ^ . t , ... i ` Ill addition, several problems peculiar to specific heavy-oil systems were solved. At a chemical plant where the burner nozzle had fouled and misfired after routine furnace shutdowns, FOA-2 added useful life to the nozzles and to filters as well. It eliminated the flame-out problem that had been caused by water accumulation. Thick soot inside the furnace plagued a country club icause.ofji.heavy .deposit..that..built..up .repeatedly ...on the.,, burner nozzle. Besides stretching the period between s_jtra_*iner from two days to three weeks, FOA-2 Sludge had choked a strainer which in turn strangled the pump in a heavy-oil system at an industrial plant. A returned fell auction to the pump in two days. From then on, small amounts of the additive kept the plant's heat ing system free of sludge. FIVE tiAhmm SOLVE A PH tillLEM Sludge build-up in another plant's large underground - atorage -tank- hud- 'covered- the-standpipe*- cutting-off 'suc tion to the fuel oil pump. Five gallons of FOA-2, recircu lated through the system for 52 hours, suspended an fully that plans to pump the mixture from the tank were cancelled and the contents burned in normal operation. A refiner customarily cleaned sludge from 50,000barrel No. 6 oil tanks by cutting holes in the tanks' sides and removing the material with power equipment. As an alternative, a mixture of FOA-2 and a light oil was recir culated through one tank. It removed about half of the sludge in a short while. Now, with success reports mounting, the Du Pont Petroleum Chemicals Division has decided to market FOA-2 for use in residual fuels. So it is that residual oil, imbued by FOA-2 with some jm's upper crust, .is. low man on the distillation column. In instrument that looks like a polo mallet or a child's toy is proving a major landmark on the long tral toward more humane slaughter of livestock. The Remington Humane Stunner, a powder-actuated tool, is now winning a place in slaughterhouses after more than a year of extensive testing. Because it quickly renders .cattle' "insensible"" to" pain,.the" meat' industry reports" "the stunner offers significant improvements over previous slaughtering methods. The instrument is actuated by a 22-caliber blank cartridge especially designed for the purpose. When it's tapped lightly against the animal's forehead, a protruding trigger mechanism fires the charge. A mushroom-shaped head, mounted on a captive piston, is sent forward by ex- The instrument, developed by Remington Arms Com pany, Inc., has won awards from the Massachusetts Society for the Prevention of Cruelty to Animals, the American Society for the Prevention of Cruelty to Animals and the American Humane Association, which hailed it ns "one of the humane movement. m: ..a ., i ;k f t ;.e ] a .. j >k : j :e MEMO: Txy :ay ion ;pJ axxtio iit'hut ft-Mjii f,-i m ifif it iiii tut: fan It, rsi (irn i riff{ frmnunifii ilv i ilia rfjtisirf- i .iiV !::!i;;i f::;: i ' i 11:! i *. i p.iii.-' i `\! ! >11 ! :: ji 1: v-ii! I tv r,i| i if . v i \ i . \ :'i ; :ii'ii i! !,!' ! >i > !>ir:!iy 1 T' ' i : ! : - i., i t; j j:; if - f; . i ; t ! 1 . ! i <' i' i!' I : >l"\' till II.-. i'll I ii.' i! i: i :i I '! i' n! it" ;j;iii..i. I'm 111:1111 i i :: l ! <' i:',i m :: ijuii'l-' ('. .liiii fill!!'! l! i. - < lli.i ill!' i : : V. II' i! I" l|-.ii;i|. ! [. ! " l S I i V i i ! . i < ' } I I I I ' i ! ' ill! si.iMfi.ii ;i I IH'I ! i\V! >rj> I! ,! s = >.. i if' ; j ii ill . ;i I .1! ii 11;; i .11 liril'ili Nil! liSli''!!,;- mi i r * V ( ! t i '.ill'll IIIMlill! fiiiliif i-lllfcii itllil- H'iiJIi I 111 } ( ' IT lili'if Cft : 1 i 1' 1: Impact and causing ittle noise. Few chemicals except con tiple responsibilities. They function as insulators on in centrated acids harm it. In many applications, parts made dividually motored racks, as guide rollers in overhead from it require little or no lubrication. channels and as load-bearing members that tilt 72-pound These attributes aren't news to many design engi loaded racks through 15 separate cams 40 times an hour. neers and equipment manufacturers, but the usefulness of Even so, the rollers normally are replaced only when racks "Iftel" as a maintenance tool is just catching on. Helping are taken down for rebuilding. The rollers are made from advance its cause is the ready availability of standard nylon rod supplied and machined by Cadillac Plastic and mill shapes--rod, bar, strip, slab and tubing. Maintenance Chemical Co., Detroit. men can either machine the needed parts right in their Resilience of "Zytd" is put to severe test at Congress plants or order them from the companies that specialize Drives Division of Tann Carp., Detroit. Spring pads .In such, asslgniients,.............................................................. and buttons of nylon hold die-cast work in position By way of encouraging the do-it-yourself approach. without marring'while" tie' 10- to" 35-ton presses"complete The Polymer Corporation of Pennsylvania in Heading their stroke. The nylon buttons show virtually no wear distributes its standard shapes through outlets in 40 U. S. after two years, although those previously used either cities. But Polymer also works closely with a variety of cracked after brief service or marred the work. industries to lick maintenance troubles. Placed under the chain of a bottle conveyor at the neighboring Pepsi-Coia Bottling Co. plant. Polymer's "Polypenco" nylon strip Craft Welding Equipment Co., Detroit, used f-g-inefa nylon balls in ball-bearing bails for hanging portable welding equipment. They minimize wear on the races, eliminated excessive metal-to-metal friction. "We've used lessen the weight of the equipment and eliminate need for nylon for nearly two years," reports Willard V. Noxon, lubrication, the company reports. Also, by acting as elec president. "It cushions the operation and there doesn't trical insulators, they protect the operator from high seem to be any detectable wear." amperage current. The balls are machined by Industrial USED IN FORMING BRASS STRIP A metalworking company has turned to matched Tectonics, Inc., Ann Arbor, Mich. Tins is only a starter list of odd jobs for nylon. A I pairs of nylon and steel pressure rolls for use in forming put the versatile plastic to work In his own plant. It's that brass strip into decorative trim for television sets. Earlier kind of material. For a list of suppliers of stock shapes of attempts to form the preflnished strip between steel rolls "Zytei", write the Du Pont Polychemicals Dept., Room .had" severely "marred the' lacquer. "The' 'special' 'rolls, "which'" " 12-67-1,.Du" Pont.Bid*;..Wilmington.98, Del.................... have a diameter of about four inches, are machined from thick-walled nylon tubular bar and heat-fitted over metal hubs. They cost about 40 per cent less than steel ones. A Philadelphia textile yarn manufacturer, Nathan Schwartz & Sons, hit on a way to control irregular behavior of a spinning frame. Grease used to lubricate metal bear ings became viscous and dirty, causing the pressure roll to vary in speed and pressure. Often the yam was soiled. Thin nylon bearings that need no lubrication ended that difficulty. Schwartz further reports that nylon bushings on the back spinning roll are still in use after five years. The National Can Co., Chicago, has ended what once was a tedious maintenance chore by switching to nylon Lengths of this special tubing carry lubricants, water, tp'liitftlJcsitfit-rL* owpwfliy? aytr- <ft'iii*i ww jiuil.Tii l1a51m4uimfil ini-iiicy * ........."We-needed a ...material -that could .fake...conoentrated.. flexing, since the lines on the bodymaker are flexed close to 100 million times a your," a maintenance man explains. "Although our old tubing lasted about ten days, we haven't replaced a nylon line in two years " Nylon rollers on an overhead plating conveyor at Oakman Manufacturing Co., Van Dyke, Mick, have mul These purls were made from nylon tubular bar and rod. Other stork shapes of "Zylel" are strip, si National Can Co. employe installs nylon Nylon guide rollers on overhaul conveyor also net as insulators and load-bearing members, il 5 ? hiuHi MH'inhi ir Mark \\ t i; !'ia'i `' j : >;. j ^ a..---.- i;!;-:'!. \ : a a :>!:;:!< -\ i ' s' l S:;' I: ' :'?; a >; . i > . a I i ......... i: : 11 ! i >. i ::::: : :i \ i .:: :! i-.ai;-'. aiui i'l:'!;- i-U'i 5-v ij`ls' - i : % i ta - .5! ! [\:-i * \ * ; i; i r \ a it I! a ; l ! ! . i i -I ii . ! ! :rt i\ . i 1 .;.! ! -a I. i M : . the delta-shaped, needle-nosed bomber Is the thin vapor 4w*v sai5il! iI+k tysawif e* (Jit fWl-iclct KMilnUoc HiTcWAirooicSs eSstJwA-jr Getting the B-58 into the air meant conquering tern- in an airplane. At the bomber's top speed, many of the and literally let the ship fall apart in mid-air. One of the was for mate , meet the aircraft's demands. 'I&l- ?wo ovhanaf HHlia 'flltro KilliNf Af on it. ' rVfsnrwa f1i^T*aMf|pr| on one ae, and many of them 's exhaust blast with A-286 super alloy bind expansion rivets, fasteners with a blend of properties that fitted them for this critical application on the new bomber. The rivet's special stainless steel alloy enables it to maintain strength at temperatures as high as I,400SF. This is an important requirement. Fortunately, the alloy thus minimizing electrolytic corrosion. Since the DuPont ...rivet, is.set ..from the head...side, ...no...buckmg.,har,ia,needed,.. knife-thin trailing edge of the wing and is too thin to admit a bucking bar, W11l1V%lJ1^1#lHI S WP Ht IiI1r?JIII Jl?lhIJUFll-KfT lIUlitriAAIljL1 V1 From a production standpoint the Dm Pont rivets simplify construction of the elevens. One man sets them easily at the rate of 20 to 25 a minute, inserting them in predrilled holes and firing them with a 1 revision Riveter hand tool. This electrical tool activates a small, heatsensitive chemical charge in the shank of the rivet. The In performance tests, other important advantages of 1 aaaJ Ilii Pont blind fasteners used on wing control surface must withstand Bearing heat of the jel engine exhaust. resistance to fatigue. The wing bends to some degree dur ing flight, putting tremendous tension and shear stresses " on"the' etlevon' riveta."Tn'"Convair's"tests "the" DuPont 'rivet'" exhibited twice the tensile and one-and-a-half times the While the B-58 is still too new to have been evaluated fully, flight tests so far have induced no detectable metal to jet engine exhaust over a many hours--indicate that the Du Pont rivets stand up to conditions well beyond those actually encountered in As planes fly still higher and faster, crowding the KfSKSsf- Kat*rripi* p t y H-t a Iv b p w ftllrwe will Iib v o t/% 1-ws found for the ship's skin to withstand extremely high temperatures. In one respect, however, the aircraft in dustry is pretty well fixed, Du Pont A-288 rivets, Convair engineers say, are already capable of hearing up under flight conditions that are still many years in the future. Thanks to the new enamel, though, they were able to turn the trick handily. They found that it went on easily and covered well in cine coat. Its even gloss ami rotor added Not only did our friends paint a bookcase, cabinet, the black enamel on the ornamental iron railing of an outside porch. Here, they report, the soft sheen is par ticularly attractive and shows to good advantage. ..Thorough, .saw 13 \ff iiritiisnry <riiffty tht:; j j s h - Safe conduct of underwater blasting was fnsnred by using "Nltramon" S, dry land and Burnt into an undersea enrol trench carved out with uMtrammmn of old Havana, built to dynamite couldn't be controlled, and the result sr 1 as a reminder of the past, the newer portions of Cuba's capital are feeling the wouldn't help much in this ease. The shock of impact of the city's biggest construction boom. the first hole detonating might bo transmitted through the water, setting off the entire blast are making the city into a modern metropolis. ...Biggest ...project--and ..ons...that.also....prciin|iis Jo. jL/u. jruiit* was awarutsa wit? tfApitisivtiQw iiic j j iTYj-i "Prtii4* xirli 5/*! % timei aiirawliM^ 4*ho ovtlr%a.itFJ3a bring about the most change--is a $28.8 million contract through its Cuban distributor, W. M. Anderson Trading Co., suggested a solution to the with the practically lands on the vibration problem that proved to be an innova other side of Havana Bay. tion in Harbor blasting* lry JJu Jrout Nitiamon S blasting agent, which normally is used only for bay but, with no means to cross the water except seismic exploration, the explosives engineers ad by ferry, the Morro Castle area on the eastern vised. It's so insensitive that one charge can be shore has remained virtually unsettled. Commut ing by car is possible, but few will tackle the hour-plus drive each way. By cutting the time to "AS GOOD OR BETTER THAN" DYNAMITE less than 15 minutes, the new twin-tube tunnel Du Pont MS (miitlseeoBd) Delay electric blasting new residents. Plans also call for a No harmful vibra* urb to include more than a dozen 15-story build tion. All told, more than 710,000 cubic yards of ings. All told, this amounts to construction of virtually a new city. Low ground on the Havana side of the bay ' entrance" and "high.pound "'em"" the.Morro "Chilli'" ..MthealiMnu"lthWa.At"ixA.ii imyiiAlnUfrcp&flp' 'CwL?DHCi"U".HvWnrlyi'TllTUiii`jAllHllUtiC, side made a high-level bridge impracticable. And a regular tunnel couldn't be driven economically sections was nearing completion in the dry dock. because the water depth would put the tunnel This dry dock had been blasted ingeniously out of more than a hundred feet below sea level. The unusual decision? Build a prefabricated "tunnel" in sections on dry land, float it piecemeal VJ- wpyffaa-l-ill.lllTCr WWtUfllJl, fbAU "HiAnon WsK+'AffLTlw 11115o. I,./J.o.otwTA rHlt.AFIAlij Jt/A-|t11iP5 sowwiaBlialtftll out to the crossing and sink it into a trench. That tunnel sections were floated easily out to the way the tunnel roadway will be at a maximum rvnl^YUHO-nOiTlilCI^r Ca-llnAMrl- aeUnlJnLlnr. iHnllo"Urt nfr*#ai depth of 70 feet below 'sea level, which still will Since then the last three sections have been lJa-tSoiAwVat? aa ri^*AAlicaAli.it.nl.Jp.wJl cl. vt-b 4TJA5- - completed, sunk in place and sealed end-to-end i sections with waterproof joints. The result, counting the approaches. Is a twin-tube tunnel 72 feet wide, the trench in which they were to rest on the bay's 23 feet high and 2,625 feet long. bottom. On the Havana side, business buildings By early next year. 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UM j>u\V"i I f \V5'i-S .si'i-; !* s i c: v : i a -., . ;iii\> iini;: i s-is \ ;t I i i \ r n! > :v I io;. i i\*1 i;> K '!' i-1! . ! ii i i in i i s.iii-;- .:(iu'ois Uy i :.i l>n i J<; i 31 3Is <' i 41 \ u K v>Si`. ! {: i\ \ WHAT BOYS' CLOTHES MADE OF? "Don't play in the water with your good clothes on," Mother has warned Mike, Chip and Robbie 100 times. She might as well save her breath. Boys haven't changed, hut fortunately their clothes have. Thanks to man-made libers--"Dacron"* and "Orion"**--the outfits these youngsters are wearing can be washed easily, drip-dried and put on again with little or no ironing. Somethingaltogether new in boys' clothes, they are styled like the popular wash-andwear suits lor men and sized to fit boys from 7 to 17. Choose from a wide variety of fabrics, but be sure they contain sufficient "Dacron" or "Orion" to insure built-in neatness re tention and wash-and-wear convenience. That way the clothes come through even a boy's energetic day in fine shape . . . wearing after wearing. Typical good performers are fabrics woven from these liber blends: 65 per cent or more "Dacron" with cotton; 55 per cent or more "Dacron" with rayon; 50 per cent or more "Dacron" with "Orion". *"Dacron" is Du Pont's registered trademark for its polyester fiber. **"'Orlon" is DuPont's registered trademark for its acrylic fiber. Du Pont makes fibers, does not make the fabrics or garments shown. WASH AND WEAR BOYS' CLOTHES: Just wash .. drip-dry .and wear CfPlt> BETTER THINGS FOR BETTER LIVING ... THROUGH CHEMISTRY WASH 'N' WEAR...NEW CONVENIENCE BUILT IN WITH IJLAC I {ON OJFtLOUST*JKTYLON DuPont chemists offer you paints that last for years -- for every kind of exterior White houses remain dazzling year after year when they're painted with Du Pont while house paints. These paints are rich in titanium dioxide, the whitest paint pigment. That's why you not only get an easy-to-apply, high-hiding finish, but one that stays white longer than you ever thought possible. For all-wood homes, there's Du Pont "40" Outside White House Paint. This paint actually cleans itself, and keeps your home fresh looking season after season. It sheds dust and grime with every heavy rain, unless dense shade or excessive stains slow this unique process. For wood-masonry houses, Du Pont chem ists provide"42"Chalk-Resistant White House Paint. It's chemically formulated to end stain ing problems on brick or stone located below wood or clapboard surfaces. Like all Du Pont house paints, it's extra tough, has high-hiding power and is easy to apply. 174 CUSTOM COLORS mixed to your order, plus a wide range of popular, ready-mixed tints! You'll find the color you've been looking for--from deep modern tones to soft pastels. They're easy to apply, and extra-durable, tool "DULUX" STUCCO, SHAKE AND SHINGLE PAINT --also ideal for asbestos shingles, cement, brick, Goes on smoothly ... dries to low-luster finish. Alkyd-fortilied with "Dulux" reinforcing oils for extra durability. White and many colors. "DULUX" TRIM AND SHUTTER PAINT keep: trim new looking for years. Dries fast to a hare surface that resists fading and dirt accumula tion. Alkyd-based, it lasts and lasts. Eighi gleaming colors and new brilliant white. Try it paiiv t s FREE 36-PAGE COLOR PLAN BOOK... Packed with ideas, suggestions and beautiful pictures! Simply clip this coupon and mail to: E. I. du Pont de Nemours & Co. (Inc.), Finishes Division, Dept. D-767, Wilmington 98, Delaware. BETTER THINGS FOR BETTER LIVING . . . THROUGH CHEMISTRY n a me.. ADDRESS CITY & STATE___________________________________________