Document zoK492Zjqp2eBdOBKjbYGnnjB

I i | r [; * '* ;f i f ; . * ' S' 4 : LIA17093 im>i '{ er < ifi ** V'' 4-iTTi ll-|`iti[V)i,'i<,r i J 1 LEAD INDUSTRIES ASSOCIATION _ M SAST U aTWECT MW VOM 17, M. V. Joa* 12, 19$9 .w .1 SPBJBCT* LK1S A-TTIVIKUIIC* PAI8 To tba Industry Pavaleipnant Oceadttae of tbs Laad Industrie* Association i Ifcla mewrarduw la Intended to jin yon sen# Idas of th# warfcwt for laad, In ecwtn*tloc with either aabartoa or other xcterlala, for antivibration pad* in building wad nanhlnary foundations, aa wall aa tba need for engineering data to b developed by tba propoaad research progrm. ley satinet# of tba Market mat, of course, ba baaad on tba asso^tlm that tba research will show laad to ba acooowlcal d efficient aid competitive with otbar Material* new used, Tba subject haturally falls Into two part*i (a) building foundations, (b) Machinery fcwidstlen#, vfcicfc wHl ba ooaatdarad aaparataly. Bull dine foundatlona Laad-aabaatoa pada ham baan fpacifled by tba *ew Tort Central Ballroad for *ntlvibration purpcaa# In building foundation* for wera than bO year*. By far tba graataat part of tbalr uaa baa baan ocnflnad to tba building* along tba railroad right of *y under Part Avsnu# into Grand Central Taxvdnal in Sew fork City. Such boil ding a aa tba Orsybw, Vw Tork Central Qfflo# Building, tba Waldorf Astoria and, wera recently, the tirion Carbide ftitt<Mngf rert on tbam pads, and th* foundation* for tbaaa buHdlngs each require bO or SO ton* of lead. Orand Central Terxlnal Itself doa* not rert on these pads, and tba rlbratloo la noticeable In th* taradnal aa coepared with these building*. In fact, Sew leric Central engineers ham told ua that vibration in tba taralnal has at tinea caused th* breaking of plats glass windows and tba rattling at glaaaas In tba terminal rartauranta, Sena otbar building* tfclch raat on tba** pada art tba New fork Central's Buffalo station, Pennsylvania Railroad'a ]Dth Street vtetlon in tbdladelphiaL, Canadian Rational Railways' terslnal and th* Queen Qlsabeth Hotel In Montreal, Th* Sew fork Central tracks passing through tba Ball Telephone Laboratories on Vast Street also eaplcy laad pads. Tba Boston A Mains Railroad likewise bought som of tbaaa pada for eaa on a cantilever brldga. Recently * two-etor7 nodical building at Qi*ens Boulevard and Broadway In Unburst, Lang Zaland, v* s.*octed on thaee p-dn, Wdch r*<pjlred a llttla were than on# too of laad. Ihla resulted fro* fill rsqulrtsiarti that specify tbaaa pads Aar* vibration la a problca, 31x11 arly, they war* ^adflad for i>pnmp . lUMp I'l . iipwwj^JW^iaWIKJ iiij ij .,<i**g-'WBnp|l . ... ' . `-a.-.*. :' LIA1709* &iTn Mi jfc-S**' rtil*r'Ai Industry Drrelepaent CcoBLttee -8- Ame 18, W$F a Mltiatcry apartment building at Cston Avsnne and McDonald, Brooklyn, Md they are Included in the specifications for the proposed octal to be erected over the Raw fork Central freight tracks on Eleventh Avenue. They will also be uHd urxlar three caw office buildings along Park Avenue, Including the naw Orand Cactral Qfflee Building. The Saw Icrk City transit Authority new hae a pacification for laad-aabertca pada for build!14a tied la with subwagr structures. In building construction there pad* hare doubtless proved their value, bet they are specified by fclt-or-sd.se methods ainca no engineering data -i i~ are arailabia. For example, leada cn there pada under buildings ranfa all the wy frosi about 250 to 600 or 1000 pounds per square inch. Thus, ifcen wa pub11cite theaa pada, we are unable to reply with apaclfio desist data but c p only tall the architect* and engineers whet baa taken place. It is felt that with adequate engineering data sad Intensive publicity meh wider uee of these pada night be found In buildinga adjacent to railroads In other dtlea and to wbvya or roads carrying bmevy traffic. The leadasbeatos pad apparently has no competition for this uaa, but architects and engineers bare to be convinced that the null additional expense la worth tddle and the additional expense la Mall In caparison with the total coat ( of the building. The recent specification of theaa pads In spotty instances such as the medical building in Elmhurst and tbs apartnent tell ding In Brooklyn in dicates* fairly substantial untouched sanest. Also, the large tonnage weed in the foundations of any one najer building Indicates a wsrUnSdls i Market even though the nsraber of such buildings which night use the pods would be relatively few per year. ' 4 Machinery foundations We believe that the potential Market for lead combination pads under machinery is considerably greater than that fer the pada under buildings. I Ths principal use of these pads to date has been under nevsp^er printing presses, vhich require about one ton of lead for iKh 12-unit press. Willie* Qinsberg Associate 1, architects and engineers of Bew Tork City, infers us that they design about 25 per cent of all new ncesp^er prid ing plants in the Prd.ted States. They hsve s standard specification for lead asbestoa pads under the proass*. Based on their use of lead, we i.uMla that nevm>M>er printing presses could constate acne 75 to 100 : tons of lead per year. While this is Dot large, the potential market for sirdltf use under other printing presses would be many tljws this Mcunt. Sheet lead or poured lead is used occasionally under such presses but there are no engineering data available to develop this market. We ' are unable to tell srgr interested people at what loads and td.at vibration frequencies the lead la most efficient, or even tdisther it *<!! do the Job. Attached as Ediitlt. A is a partial list of users, Including newspapers *se presses are now installed on lead-asbestos pads, which Includes all of the Sorlpps-Howard, Knight and Kstkiouse paper chains. The Ocas Printing Ccrpmy and R. Hoe 4 Co., manufacturcra of printing presses, have alee bought lead pada occasionally directly from the manufacturer. ^UW.-IMWP 1 m JHHIW.MUJMJU h i m "* >c m J II. u p ^ p u m U W W ^ W illw p M H d l **~<fHWBK^lWWftWW|gtjl.l"' '^W1^ *****qp 'FWO'fm'w- l^wlgfyt,r^-- t . "WiWrM `.it'V HSW1' LIA17095 lud&afc. Lt*ij***-. 1 ;1 F Industry Development ComalUse -> June 12, 1$$9 Vllllii Qlnsberg InoeliUi hrrs told us that. If engineering data were evailahls, then pads could be used under a ftti*. many other type* of machinery snd sugyeried dr condltlonln* eguiprwr.t aa a peit potential market. In this connection ve hare learned of only one Installation, the cooling tower on the roof of the new building at 575 Lexington Avenue, Hew lor*. The architects, Weinberger, Primer., Laichtman 1 Quinn, hare Informed ua that the pads are performing satisfactorily. The peds for tfala cooling tower ueed approximately 100 pounds of lead. Me hare discussed the utter with the Carrier Corporation Mid also the Air Conditioning and Refrigeration Institute of Washington, 0. C. Carrier Corporation Inform ua that they are currently using rubber, cork and springe as aetlvlbratioe measures under coeprmssors, pumps and fane. According to the Air Conditioning Institute, the number of occpressors sold for this pur pose each year over the last fire years has averaged well orer three art 11 loo, I E. with a similar nurhor of pusps and fans. Bren If only 10 pounds of load k ware used per unit la ar-tiTitration pads, this would offer a total potential : market of better than $0,000 tons per year and, sren If only a Mall frac tion of this market were crptured by lead, tha tonnage could be substantial. E A Chicago construction company has asked ua for assistance In connection c with an existing co^resser Installed on springs tfclch are not gltrlng performMace. Without engineering data we haft* eo far been ahla to be of little help, fills sse ca^>*y felt they would be useful to Isolate roona centalrdrg business machinery. : We harm studied the catalogs of manufacturers of competitive materials i and devices such as tha Belter* Ccqparqr of Boston; Clark, Cutler, McDermott Company cf BrarJclyr, Massachusetts; Lord Manufacturing Coepary of Erie, Penneyirilai and K3 Hszifacturlng Caspacy of Bew Rarer., Ccsnectleut. Their products range from spring Brunts through felt, rubber, Be-oprene and vinyl l chloride surrounding sisal flbera la cork. Ueea suggested for Beoprtna pads, fer example. Include grinders, shoe machinery, printing equipment, Sh i*.h presses, fees, coepreaeors, blowers, pispa, motors, heavy lnatrueanta, teaInaaa machines, generators, octnreyora, drill presaea, wood flnlWring machinery, screw machines, gear cutters, riveting machines, ball and roll mills, sugar refining machinery, dr conditioning equipment, lnstraiaot pm>ela, addressegrapha, power sewing machines and die casting machlnaa. One catalog, fer example, describes the use of felt pads under 2,000 Icons in a single textile mill. We estimate that. If these pads bad bean laad-aabestoa instead of felt, approximately eight tons of lead would have been employed la this single plant. Sens lead-asbestos pads were reocutly purchased by Vibration Mounting, Inc., a manufacturer of other types of antivlbrstlon devices. It is under stood that these were to be used for launching pads for Mika adssils bases. l The U. S. ftireau of Standards Is soon moving Into extensive new quarters. The Director of the Bureau has told our Basearch Director of the great S> eenoern they have about vibration In connection with tha tremendous amaal of costly Instruments and equipment In their laboratories. Be further said that If engineering dsts on lead pads ware available, they would be considered for uses afelcb would iouat to many tens of lead. e LIM709 fc *I i : ^ Industry Development Ccralttee -Is- Jam 12, 1959 Apparently th# cocpetitles material* do not h*v* th* durability of lemd-asbertcs pad*. Carrier Corporation informed u* that thsy expect about 10 year*' life out of the materials they are using and that they than have to be replaced. They ahoved riffielect lstereat In tha ls*d-a*bestos pada ao that they are sending an engineer to rlalt us. Conclusions tfcile tha foregoing doaa not attest to plaoa a figure on tha total market nor on the portion of the market which wa sight expect to captor*, wa beliere that it doaa indicate a very eubetantial potential tonnage, of course providing that tha research will develop infcreation enable of helping nj to sell the market. Since publicising the peds under the Union Carbide Building both in our magazine, LUD, and in an ad in BKZ)0ZKXK> KWS-REKUffi, we and-, tha mmfactorera of pada hare received quite a number of inquiries asking fer further engineering data and assistance in design, tfclch we hare been unable to supply with the infcreation wa hare. Excerpts from some of these inquiries ere attached for your information. Wa feel that the recomendation of the Technical Steering Committee to develop the necessary technical data should be approved and will be worth the expenditure and would be the means of presiding us with the necessary infc mation to devslop a technical publicity and promotional cvpalgn to capture some of this market. Very truly yours, Exhibit B--Excerpts from Inquiries l i JMjppWJI- PUD HWHB jimvm w^i uiftiip. III - j ii Ii,i rn j M< | WH*)PBJ>'WWM| 1 JJP.WSr- wwflT^W ; LIA17097 Wl 1i -liMTil**^ ) l SBUTT A ! Partial Hat of Paaro of LaoA-labaatoa Palo " ' " "~ 1b Racant Taara M ifilrn r i nnHlli I Ml i f I ninM IM M M M M M rtM a in B in tia l4lr m O M li i llU U M a M M O M M IH i MM loatao Borald Traralar Tort Worth Star Talagraa Vibration Mountinga, Iao. (varloua lmtril itlw) Cm Jtraay Journal Boatcn <i Malaa UUroad B--ark Star Ladgar VUtarKlng 4 Son, BaaMeat, f*if Cm Jnatla Ocapaey (OiTilaid Job) Cm Chattanooga Ti-- CM my Bally Ban Washington fort Borald i Albvy Tlnaa talon talon Carbida MlAlm, law Zorfc, B.T. Cm Spokaaun Baala*, But, -1 Xalalar Corporation Cm Knlckarbockar Bawo, Albany, B. Z, Boffalo Brnoing Bona Cm Sac Antonio Light, Taxon Taxarkana Oaaatta 4 Dally Bo mb Cm Anatln Co^aoy Washington Sally laa later Stracturaa Co. taoaoa Madloal Cantor Bldg., Cabarat, L. X., B. Z. Cm Aaatln ff'T**T Pittsburgh fraaa Taxarkana Oonatructloc Co. Patriot Bm, Harrisburg, Pa, Hartford Couract, Oooooctlcui Journal of fr--iroa, Ban Me, E. Z. Cm 5erlppaBaward Supply Co. Dstroit Praa Praao (Scrippo-Bovard Hrtatp^r Chain) Cm Flttaburgh Proaa Cm CXavalaod Praaa Bark Craning Baua . Waltar Soott 4 Co. Oroanvlllo-Bavs flatecrt 4 Ooaa Printle* Proaa Oo., taloago Qroutnllla, B. C, ,-i 1 Heron Baaoon Journal, Heron, Oslo Clarion lodger Harrisburg Patriot Bmm Jaokson, MLso. Cm Datrelt Praa Praaa Mngihla CoaaMTdal Appeal Tamar Construction Oo. Blagara Palla Ossetia Rdladalphla Bulletin Job Ban Zoxfc World Tolagrna ; Heron Baaooa Journal Ja/bum Ciglnaarlng Co. Long 1land Dally Praaa, Joules, L. X., B. T. (Hathouaa Chain) Albert Kahn taglnsern Washington Poat Nlaad Baraid Haluigfa Saws 4 Ob--mr -f apiiaM yy~iwi|wii<iniMnai;jii w-!^r j'jrjj'" *.J*. MI.M"1;1 'yawa w ajI \ N 3373-M -- > n ) p r * ' . .......... . 'nuf -ai ^-yni;ffJ! "." ! ngn m ? m wpi :- ' iH'l>l-wn^ll iww .i|p,u.m.M > aggawp?^'11!.1 .fgfffiw1 '- MI'iriiV TiJMfci' i ...ii,A'tt:J:-^/.j,-^Si.Bgly|. *s ' Seller* Conatruetloe Oo.# Montclair, K. 3, 'dike* Barr* Publiddng 0*. ,x. 1 a* Britain Herald Lancaater Zoo. V St. Peteraburg n*M i Baaotont toterpriee 4 journal Ihe Bomtoe Pro#* L. X. Star Journal Portland Oregonian Portland Journal M.aal Herald Oeo. Puller and Oo. Dalle* Horning lee Janea J. Vetera Corp. Struck Conetraction Oo. ii .-~s j2 " I LIA17098 mem CHTHIT A Pag* 2 > I - Mm;., !.!. ' "" e " ' Ll A17099 *' BKZKTB S' teiiyta few Lattara to Load Indoatriaa Amoclatla* JU Uid hd> .^1 I ! - /OMIO, 195* W* would t i7 such *>pr*ciaM laandag aor* dbout tin vibration Inmlartion prop*rtl* of load, aa daacribad on Pa*a a* of tin Prodoot teClBMrlac 880V OdOK for 1959. B. L. Daily Baaaar Outtin* HaoM naa, In*. Mb Dot* X bride* daai*n *o|la*ar with Wchieai 8t*U Highway Daptftaaot. If t o o or* eoneamad idth tha problan of vibration m^ pr*sri.ee or aoand sttsnustioo--in orchitactor*, la bsavy ayhl nory or prM 0*d{n, it Kill pay 70a to lnv*stlst th* adr*itaA*a of lead. Writ* a* today, for ooaplata and dstailad intonation.* Fla*** Mod ao tha dbert* asntloosd intonation. Arthur Act** MLehlfas 9tato BLcbvay Doportaaot Itajr U, 1959 Dm followinf paracraph la takan toon oca of year adat *If yoo art cone*rood with th* problan of vibration atp. prtMioo or Bound attamatlon--ln arcfcltactur*, la haavy naefcinery, or pr*a daaijn, it will pay yoo to lnvvatl|st* th* ldlBti|ia of load. Writ* Ha Uk Io t . f* wnltta aed intonation.* Plaaaa toad aa iaforaatloo rsftraaead la th* abeva parafr^h, aa a poaslbla. J. K. Itiaso, Pro^aet taginsar Kadlo Corporation of tearlo* *7 6, 1959 Would yoo plaaaa aand aa njy availabla information yoo nay hara on tb* d*ai(n and installation of laad*aabatoa anti-vibration pada. lhaa* pada ar* hrlafly daacribad on p. 83, OB, April 23rd, 1959. A. P. Balodla, P.tef., 0aal(n Sactlon Polynar Corporation Ltd., Canada : 1.iwnaya> ^naaa^.*w***.: amMmu* * 1 w v -w.- * N 3373.02 >{c^jpw^jpywj. LIM.7100 imh*' iaiirtSrft`V:ii>'/ % &` BHisna h( t *v L, 195? Tour Ad In tha ftiglceerln* Im Seoord ef April, 195?, with nfmm Vo *Koe Load Soiree Vibration Problaau* In of interest to oar offloo frost the eten<h>oin\ of constructing a btoo for largo centrifugal refrigeration unite for air conditioning and for largo fana for air ooodltloelng, X would appreciate ey further information that you Bight giro to na with ref* areaoe to ifearo thia material on bo purchased and 017 ****** lltaro two that yow may ban Kith rofaronoo to It. Tlneeet D. 8111 Sill Conairoetloa Capaay 9l. 19S? Kindly furnlVi any arallablo lltaratoro 00 vibration suppreeolcm or acuad attenuation and tha uao of load la connection therewith. K. I. fialkow, Chlaf, Design Brmfc 0. 8. i7 Engineer nstrlct, I. Z. *ly 25, 1958 laving road with groat Intaroat tha article **ow Otalec Carbide mailing floating on Laad* la your magarise *Lead, oolsaa 22, Busber 2, oo noold lika Oto obtain fron you, p^>hlata thleh deal with engineering Information on laad pads aa anti-vibration material. Kgcc Bcnacl, Sr. Booaareb Bin glnear Roaaarcb Staff, Conoral Motors Corp. Krcarpta fraa Recant Lettera to Laad Pad Hwafacturore tea h, 1959 Ho aro lntarortod in tha utUlaatlon of laad for acurd and rlhratlon attenuation In our machine tool a, and haro bean roforrod to you by tha art. LIA Expanded Ha search Pregram oho wggorta that you manufacture load asbestos Vlhrat-lftn ^ ar w mM f*,* v* 1___r* .^ .-a^-a >*| Un Ilka for you to ploaaa aond ample* of Batert.il for u m In thia typo of wot* to the attantlon of our Nr. John Ctrebriel, Motallurgiat. Vo thm* you. L. 0. Huffman, Buyer The Monarch Machine Tool Coapany May 5, 1959 Vo are very much Interested In learning if you haro any material or prooeaa arallablo *ilch could bo placed on the Inside of tone Boring machinery to deaden tha nolaa and rlbretione, or do you know of any eound> proof material ihich could be used for thia purpose? Thank you for your court#ay. Joseph Seiberllch, Research Associate Professor, Unirsraity of Mow Haopdilre biglnearlng Experiment Station upsi i.iwiiin iipni;'.|iiyyitft'jii.si ^ - ' V'- ' / LIA17101 "V ..Ji Lr--. ....*..". F - -,v^1 1 f o i si. i* f * i l I. 'i,- i f i. i. ] hr r"* j 4 fr r If i" l i CEBIT B 3 1, 1359 Bequeot for bid on 10 1-1-1 Floating Ba m Tor Bawapaper Hilling WooMno Dn, Jcoee A Cc^cy, Zno. April 3, 1S59 Zt haa beeom nece Mary to loolato 2000 aqoare Toot area oT oar pretest factory Tor purpoeee of (ift laboratory. The equipment In tba room dll oo*i at in part of an interferometer dilch requlrea extreme mini-- vibretiaa. ZT you manufacture any product afcicta odd bo need to loolato tbo floor of tbo propoood laboratory* Z would ^tproeloto year eeoddng to ay attention such Information aa la available. *. M. JOlli, Jr., Float Fadlittoa . Ordnance Dapartnont of tbo Oafonoo Cootronioo t&Tiadcn* Oonoral Cootrlo On. April 9, 1959 Vo have ae argent problan of *11*1 noting oalao and vibration Cron oar hoary prooooa. Any Information on year product rolatlru to tbo above would bo greatly gprrditad. Steven Dawchak, Plant Haugar Lodi ngtnn Sbaot Natal Vorka Ootobor 6* 1958 Vo art lstartatad in tba ua* of antl>Tlbrtloc pads aa a noana to reduco ayapethic vibration In tall chiasaya. Vt ccntactad tba Load Zndaatrlao Aaaodatioe, and tbay aont no their available lltaratora and your nan*. V* ar* primarily concerned with engineering data at thla tia* and waro wondering if jrw could furnish ua with information pertaining to the maxiam allowable oompresalv* atroaa tba pad can wlthetaad. Secondly, any Information you could aupply aa to tba conaldarotion given to creep failure of the lead under eempreeelcn would be helpful. 1. V, ftxwUr Cuetodle Conetructlom Cc^any* Zne. October J, 1958 V* bare been adrleed by tt*. David K. Bordna of the Lead Zadoatrloo iaaodetlon that you ere In the proceaa of manufacturing an antl-vibratioa lead pad tddeh would be helpful In reducing aoundt aet tip by vibration from grinding machinery Vtlch la uaed In our vteel concrete reinforced plant her*. Zt la our underatandlng that thla work la attll In the experimental atage mtd even though you nay not be reedy to offer any product at *M tine w* would appreciate any helpful Information tdileh you might be able to give ua leading to tba aucoeeeful eolation to our problem. Horace S. Felton, Fr*aidant Felton, Sibley A Co.* Zne. ...... '>^-^7 LI A1710 2 iiMn^iifcifTrt^iN^iiifi'i'fiiTi niiiifrti' jmi m, -:t ~ -- w' l -1 i ir h r ^S:'ini bh ibit Pan k Anyuat U, 1958 V* are lntareatad In the s n of anU-vibr*Uon pada for iaclaUr* tha foundation of a rethsr specialised AneUrent. We reaualiaa Umm io ba of a typo alxllar to tboaa daacrlbad In Tolvaaa 22, lumbar 2, of the public*, tloo lead*. Kindly aand available data and deeoxiptire literature on your anti* ribratloo pada to ay attention. 0. V. tanynlcfc Stallarator Aaaodataa taly 31, 1958 W# Mould Ilka aona information oonoornlny tha load wrti-vibration pad# t*ri.ch your oompwy manufacture#. Wa hare a problaa of auppcrtlay b larja thaarteal tka tdiloh vibrato conaidarafcly. Each tank la aiTportad on 6 pdpa colnana waldad to 12* X 12* baaa pittaa and ara anchored to eoorreta footlnca with b - 1* bolta. Vo htva doalyned tha eolaana and hara found that tha vertical load la 37,000# on aasb colure. Thla lead Mould yire a baariay ralua of about 250# par eq. in. on tha baaa plata. The baaa plata Mill ba reetii* on a padaatal 6* abore tha floor. Va wild Ilka to placa a laad rti-vibration pad under aaefa baaa plata. Would you plaaaa let ua know aa aeon at pcaalbla tha ala# of tha pad Ma Mould bare to specify to taka tha loading naotlosad abora. Plaaaa nota that tha pad will ba rettiny on a padaatal and will not ba ancaaad In concrete. P. J. nun Lockwood Ore ana toyinaere, Zao. July 29, 1958 Wa nota an artlcla In tha Land Indoatrlaa JLaaodatloo'a publication on antl-vlbratlon pada aa imfactured by your fir* and used undtr tha fouadetlona for tha Union Carbide Bulldlay, New Xcrk City. Aa re bare occasional prohlaaa of vibration control, and thia artlcla atatoa that thaao nada * arractire in tha reaiatanca of trmardaaioa of vibration, wa are lntareatad In obtalnlny additional Information on thla product. Specifically, re would like technical data on the rvaietmice to tranaadaalon of vibration, on tha detailed eonetrucU.cn of tha anti-vibration mats, physical characteristic# and load bearing capacity of your product. Wa would alao Ilka Information on tha eoat par aquare foot. John H. Brlayburet, Jr. J. X. Slrrlna Company April 17, 1958 Fleaeo mail complete daacrlpUre information and prleaa oo Lead-Aebeetoa pada aa uaad in tkdon Carbide Corporation Bulldlny at 270 Park Arena#. R. B. Raid, Ganarol Purchaainy Ayaot By B. L. Hart Bowatara Southern Paper Corporation - nrnmti 1 LIA17103 .,&*L.. ate*- ' liiUViirV.ifi'ir^rr'^j L BEST B rP 5 April 6, 195b W are interested la performing tests of a product 70a Mgr here ad rocoomond for the vibration absorbtloe of rrtrsmlj- bssv/ forcing koMrt end priuii. Dm material should bo available in flat pieets qsproxinetel/ S/8* thick for installation between tho hwuf base and the concrete footing, for the purpose of the test ve would p>preciat receiving e sample piece of the notorial at least 2* x 3* ia else. At this tine ws do not desire my tegineeriaf aerrioe hoerror. If after making our test we require more in?arealion, we will contact 700. Flaaee advise description and price of the material 70a furnish. C. Halglar, furchasing T*f artmarl Ledtsh Co. . sHw miii >*arw. W.!