Document X77BJa5Y6wYr6GZQKz71rGDaJ

FILE NAME: Union Carbide (UC) DATE: 1960 May DOC#: UC019 DOCUMENT DESCRIPTION: Journal Article - 'Asbestos1 "ASBESTOS" FOUNDED IN J ULY 1919 AND PUBLISHED MONTHLY SINCE THAT DATE BY SECRETARIAL SERVICE i 807 WESTERN SAVING FUND BLDG. S E COR BROAD &CHESTNUT STS. PHILADELPHIA 7, PENNSYLVANIA Trust of C. J. STOVER, Proprietor E. E. COX, Editor Entered As Second Class Matter November 23, t9 2 l* $ the Post Office at Philadelphia, Pennsylvania, Under Act of March 3,1879 . ' wav 1960 Number 11 ' CONTENTS 1 NOTES ON ASBESTOS DEVELOPMENTS I IN CALIFORNIA ................................. . ' pPe . a. . . . ( _ > V i i 'n S I ^ A T O M r a S PRODUCTS CORPORATION .. 1 : S S r efin er y r * - .... AUTOMOBILE SALES.............................................. 30 . m arket c o n d it io n s .......34 / NBEUWILDJ-IMNGAS..B..E..S..T...O..S....P..L..A...S..T..I.C. TM-FEL*T`*`..*..`..:.*..*..*.`..*V. /-```V 8>6g : PRODUCTION STATISTICS ................ ^ . Imports and ex po r ts ................ 60 . NEWS OF THE INDUSTRY ........... ^ CURRENT RANGE OF PRICE.................................... ' s6 Asbestos stock q u o t a t io n s ............... . .......... ilSBESTOS I, Indexed regularly by Engineering Index, le.^ . " * r- " SUBSCRIPTION PRICE ^ ^ Ye,, United States - ~ pmintries - $4.00 Per Year 'p i e s 0-0lo V a c T s ffiX fe " , - (Current, .26 Each (Payable In U. S. Funds) Copyright I960, Hand M. Stover, Truatee. Treat o. C. d. Stover `'AfWESTOH'' -- May IWU) Page I . . . . . .. ... -- ll| 'p l* V ^ '. I ------------- - , .polis -- si local newpaper item dated Decomber 4. sjiys lho purchase price was }{<4.i20.000 for about f.on ji.-ies -- have drilled a reported 55 diamond drill holes averaging 2<*0' to 250' deep, with the deepest 000'. The tonnage figure given out is lo.000.000 tons proven, which vastlv exceeds any earlier tonnage estimates known to the writer. As no technical data on the drilling results are being made public at present, there is no immediate way to analvze this latest 15.000,000 figure. One supposes it must have been built up by the drilling and thus represent fiber zones which do not outcrop, for despite the extensive bulldozing to clear brush and make a few shallow trenches, the writer did not sec any significant new surface ore from that mapped 17 years ago. The best fiber zone as known in 1042 was oval in shape with the longer axis not more than 2;lV and the short axis somewhat less. This orebody extends in depth to some point unknown to the w riter but the deeper -material is out of reach of economic open pitting. Elsewhere on the property there are pockets and lenses of fiber, many showing good. Canadian-tvpe, cross-fiber chrysotile. but none with any persistence'either along the strike at surface or at depth, at leastCis originally drilled in the l \ n r years. It would he a pleasure to welcome a new- asbestos producer, if. in deed, the picture of tonnage available has changed through recent work. XAPA COUNTY -- Some 20 twisting aud up-and- down miles north of Napa is the short-fiber chrysotile de posit which Kohler and Chase controlled for a number of years. The writer studied it during World W ar 2 when the 'search for workable chrysotile in California was at its most urgent. New owners arc at present experimenting with filter recovery using special air separation equipment, the goal being, presumably, to get a cleaner short fiber than the Canadian Croup 7 type being shipped in quantity from the east to the west coast. Any method which will cheaply remove dust from short milled fihefs will, of course, he web omed everywhere. Concerning the deposit ilsclf somewhat the same com-1 i'agc 1S I i E S T O X " -- Mai/ lituo _ .. Cable Adore Atbettic, Thetford Mlne^i ^ ^ ^^ ` Phones FEderol 5.0193 ' fi ' Thetlord Mine. Ou*. ^ i v s n r s r s . A > s s iE g a a g g W A flflB M ie A I BUtk Leke. Ou. MCAD OFFICES T M l/ f \ n MINES. M l . O 1^ Productif of RAW ASBESTOS ; me* -' * W' ` M A S D W A siW cT S CO. M tll* .* * ~ * V MEWARK W . O OEAT B R ITA IN . A . A. BRAZIER A CO., tA.k..te> ttd.. ' "A**" L*do." Bed C ru Ned. LONDON. N M A * v . . IA P A N ........IW A I A . R jhontxiM-CdotailM r w B ~ * TOKYO ................ IO S ID E A F IL S . c T a ^ . r A - d . r e h . . . . OKU SSE LS 4 . . KettarleetreM 30. * Edieueoneu*. HAMBURB II. FR A N CE .................. M IN E R A IS A M E TA U X . I A n i H Mcht. IBlt* fe tte li S0-00) - , P A R IS ( ) . Page -- Hhi" incut i> possible is ;i1 t opprlopolis. Seventeen years It-* not cham*ed in any way tho amount of filter that can I* mvii at surface. <n avcraire the fiberized serpent ine is lowgrade ami the /ones with more filter ire usually elosely as>> dated with /ties oI low-grade material or barren rock. lhc problem of how tti maintain a rood ore grade when minimr I.POO or mort* tons a day in an open pit has probably not yet been solved. The best fiberized roek is at present being gouged out if poekets or lenses and no regular working mine benehes have been established. Studying geology in the immediate area ol this moun tainous Napa eounty deposit presents somedifficulties as there is overburden just about everyplace. Where the serp entine mass lias boon bulldozed to took surface in a rather small area, perhaps 200' wide and 400' long alonjr a ridgetop. and also in road cuts and a few scattered prospect cuts, the overburden ranges from a few feet to about 20 feet. Elsewhere there is no way of telling by eye how much overburden there is, or. for that matter, how much good fiber or barren roek underlies this ubii|uitoiis cover. Optimism is scarcely warranted that much better ore will be found when the 'dozing of overburden has lieon ex tended. Where the geology is visible the impression gained was land remains) that not only is the serpentine well sheared but also that there has been displacement bv steep faults. The sharp changes in the appearance of the serpentine from zone to zone, and similarly from fibrous zones to Uirren rock, give reason enough to expect faulting. Other evidence is that short lenses of high-grade ore with well-developed ribbon structure seem to have been cut off sharply from their probable extensions ns originally formed. The amount of ore with rich ribbon structure now found is tiot great enough to markedly affect the average fiber content of the i.ro is it will he mined. The writer is not aware that any spaced diamond drilling has ever been done on this deposit. Possibly some is now contemplated. Obviously formally engineered explor atory work will he necessary to build up tonnnges of proven ore in this uniformly.overburdened area. In any event, no drilling wsis in evideheo at the time of the visit, February. Patii' I! "A fittliSTO H " -- Stay torn Asbestos Cements Asbestos Millboard Asbestos Rollboard Corebestos Panel Fill Commercial Asbestos Paper Pipe and Block Insulation for Heat and Cold Asbestos Felts and Paper for Saturating Spraycraft Fireproof Acoustic Plaster 1414 E. LINDEN AVE. LINDEN, N. J. l!Miu. .\ shovel was at work cutting it short bench on the steep mountain slope a few hundred feet west of the old mill building <which now has new additions ) and somewhat above it. A fiber zone of merit may or may not be found as considerable overburden must first be removed t find out what lies below. The question, however, is somewhat aca demic as a mining method will first have to be established, involving removal of the up-slope overburden, before any ore in quantity enn be won from the bench level being established. The best fiber zones seen in the ridge-top area as now leaned off consist of sheared serpentine with scattered fiber vein lets with no special orientation, as in most Canadiantype ehr.vsotile deposits. Few veinlets exceed 1/1 Uth inch in width and the number of them along the strike (about east-west apparently) or across the strike in any zone varies greatly from place to place, (hie would be straining to ex press a |>ercentage fiber content over a particular face of the many exposed faces. Over all the exposed faces in the bull dozed areas it is possible to sav with certainty that the innterial on average is low-grade, probably too low-grade to be . . ore under any circumstance if not upgraded by some ' . method prior to milling. FRESNO AND SAX HEX ITO COCXTIKS -- Some 20 airline miles north of Coaliuga in the Diablo Range an unusual and most interesting asbestos development is underwny. The fiber is ehrysotile but compacted in the long geo logic past by great heat aud pressure, and probably active hot solutions, to the form commonly known os ``mountain leather**. In Xortli America specimens of such leather have been found from Alaska to Mexico hut because of Ihe small amounts available, the material has always been treated as a " miheralogiertl curiosity*', without economic significance. The very large tonnages, now potentially ore tonnages, north of Coalinga hid fair to change the heretofore lowly economic status of compacted or compressed ehlysotile as bestos. Among other uses, a market fof the closely sized, dust free, tough asbestos product (very small sheets or mats mixed with " unit." ehrysotile fibres) seems possible as fill ers in plastic and asphalt floor tiles. The California type compacted asbestos, perhaps i*il IJC K " A Z l t K x T O H " -- Man MHO HAIR FELT F0R Low Temperature Insulation Newark Hair Felt Co. 1000 Maple Avenue Lansdale, Penna. Iiniuh il nsln sins would In* 1 ;<it| descriptive tiTiu as tlu* fibers aiv held r;itiu*r tightly t>iiollcr ly tide, has mel with in quantity once before and studied by tIn* writer, at stragari in Yugoslavia in 1052. The Yugoslavs were origi nally eoneerned with Irvins; to red nee the honded asbestos to more sn- less " u n it" titters, such us are produced in all isltestos mills. Experience finally showed that whereas the bond holding the filters together eould be broken to a degree by high-speed filterizafion and give a fair per eent of short unit filters, the product at any mesh size still eontuined many sheets, which we might call fibennats. It was ulti mately shown that the mixture of fibem a ts and libers not only was a good, usable product but also that for some uses it was a superior produet. So similar is the California bonded ehrysotile to the Yugoslavian th at there is good rea son to suppose that its development will follow n like p at tern. Several California industries presumably would be happy to have a large local source of good, short fiber ehrysotile whether in fibermats or fibers, and hence it is likely that a new asbestos mining and milling business is in the making. Two companies hold the best of the fiber-bearing lands, Cnion Carbide (Nuclear Division ) and the Mike-Run Cor poration, a subsidiary of Basic Resources, Inc. Together the holdings are said to exceed 12,000 acres, divided about ecptally. Some comments on the geology and nature of the ore may be of interest. The ore occurs in well fractured to leglilv sheared zones in a serpentine rock mass some twelve miles long and up to four miles wide. The origihnl rock appears to have been a pyroxenite intrusive. The thin, com pressed fiber, sheets arc found along the fractures ititd shear planes sometimes so abundantly as to make up 20ft to 40f t of the material mined. The average " ore" grade will lie less, quite possibly between 10ft and 20ft as milled, aiid with easy screen concentration to raise mill headsabovc these figures. Cheap open pit mining by power shovel alone will be possible to whatever depth weathering (ahd thus rock softening) has gone, over 70' as shown so fai* by the shallow drilling. Indicated tonnages are large us the fiber zones in Ilie weathered serpentine arc "O' to several hun- PitlfC 10 " A S I W S T O S " -- Mail H;o P li' * ' .y Cf WHY DO YOU USE 0 THAT OLD CRATE ` `Xe e u ie m , fa '* 01 ^ d i m 7/ " 4 G * * "^ l/'r r M i/lv u ftM J . ( tim . \.<li/>'7 0s" --Mn>i l,^,,^,, tI I rij/*- ti ilm l feet wide and in one place. at leasl. on the Mik-hon t 'o rp o ra tio n property as followed hy the writer, over a mile 1 ~The writer visited every known oeeiirronce of ehrysotilc in California during World War 2 but missed hearing about and hence seeing the Diablo Range's very special product. Apparcntlv its true nature was either not recognized. oi onvhow not reported in the literature, by the several gcolo,,sts intent on their important, wartime studies of many cinnabar and chromite deposits, two mmterals also gene- tieallv related to the serpentine mass. The New lUna einnabar proper tv is still a famous producer and is only a short distance from the ehrysotilc occurrences. The operators of some of the war-encouraged chromite mills were frequently annoved and inclined to roundly berate the " leather bits whieii fouled up their wet circuits. These same leather bits now become a useful industrial mineral -- and so marines mineral progress with no one ever knowing for sure when a diluent in any ore will become itself an ore. I t has hap pened before. . . The bonded chrysotile sheets or mats are interesting to observe at close range both in the ground and during mill ing processes which are being developed especially for them. Where the serpentine host rock has been ` blockilv frac tured ami the very thin sheets lie along the fractures, any one sheet can measure several square inches in area, l ne color is white to greenish when dry. Where the serpentine is highly sheared, actually schistose in appearance, the fiber mats avc often so small as to escape detection by eye as they and the sheared serpentine rock arc both soft and green when wet, always the case in the bulldozed,,trenches and shallow drillholes being used to outline the fiberized zones. Drying and various crushing and screening processes serve to remove the fibermats and leave behind rook particles and most of the dust. Basie Resources, Inc. has another sub sidiary doing the pilot milling in Coalinga and the extra ordinarily clean product so for produced and to be supplied to industry researchers is based oil air separation on n screen of their own design. , As noted previously, the milling process serves to loosen a fair amount of ehrysotilc fibers from the fibermats so that Page I. - . \ S t i t : s r o s " -- Mag foil) C A N A D I A N ASBESTOS the nicolet asbestos mine Norbestos via Warwick One. Address Inquiries lo: NICOLET INDUSTRIES. INC. ASBESTOS FIBRE DIVISION Nicolet Avenue Fioritimi P a r k 1-' New Suburb of New York City. Jersey 1:<HI'S T o s " ihi'i I'11'" i'flQt' l in 1!i potential |*l;i>ta- tih* tiller produets <possihly -b> - >i) mesh. ;iud a ~>0 mcsln both forms of chrysotile are present. This combining of the two ean give a good hulk density averaging. if required. less than 10 pounds per cubic foot, while at the same time, it is reported, jrivinjr a strength to the tiles greater than either form ot asbestos used separately. Altogether the eeonomie possibilities of Conlinga bonded chrysotile aisbestos seem attractive, and the writer, among many others, will ho interested to follow this new development. JOlIXS-MANVILLE CORPORATION has licensed TH E FLINTKOTE COMPANY to manufacture high and low pressure asbestos-eement pipe long marketed by J-M under the trade mime " T rausite" and will design and engi neer new Flintkote production facilities for this purpose, it was announced jointly on March 29, 1960, by A. R. Fisher. Johns-Manvillc Chairman, and I. J . Harvey, Jr., Flintkote Chairman. Mr. Harvey said Flintkote is planning on entering the asbestos-eement pipe field with two new plants -- one in the East and one in the West. He added that these products would be merchandised under the brand name 'O range burg*! through the Orangeburg M anufacturing division, a leading producer of fibre and plastic pipe and conduit a c quired by Flintkote in November 1958. GREENE. TW EED & COMPANY 1ms published a catalog and price list on Palmetto molded packings (MPlfiih. This new. catalog and price list opens with a twopage section devoted to Greene, Tweed s \-ty p e packing, the Palmetto Pyramid: followed by individual page de scriptions of the Palmetto: C-Ring, Kup. and Pisto-Ring. Copies of this eatnlog--ulul related bulletins on other Palmetto molded products: Self-Lubricatihg. Fabric. Foil. Plastic, and Filament Packings: Gasketilig fttid Gaskets-- arc available from <reue, Tweed & Company, North Wales. Pennsylvania. lUujr I } "A SB K STO H '' -- M'iy fini NEEDLED FELTS IRE 'S SOLE PRODUCT Since 1935 originators and world 6 largest exclusive manufacturers of . Needled Felts for ASBESTOS CEMENT PRODUCTS Siding Sheets P lPc Asbestos paper Millboards Balanced Synthetic contents d r y c o r FELT CO. STAFFORDVILLE CONNECTICUT. U. S. A.