Document qkOXzBNyO3GE0QzQgeb12aKBn

FILE NAME: Sun Oil (SOIL) DATE: 1967 Nov 24 DOC#: SOIL002 DOCUMENT DESCRIPTION: Letter from Johns Manville CDn J . f(^/o r^ / en / \ r J 0 .4 /, NOV 28 1967 CANADIAN J o h n s - T V Y a n v i l l e c o .,l im it e d ASBESTOS FIBRE D IV IS IO N m TEL. 879*5431 c i j. > P. . BOX 1 50 0 ASBESTOS, QUEBEC |\ ^ J Ci ^ s`A*^ November 24th t 1967 fT ' U Hr* Donald 8 Johnson ^ Sun Oil Company, 1608 Walnut S tre a t, PHILADELPHIA Pt>n. 19103, Dear Hr. Johnsont AS8 001717 246903 OWe have fo r acknowledgement your la tte r of November 18th and are piasad to provide ha following Infatuation to the various questions raised in your le tte r o f Hoveber I3thj in a l l eases in which asbesto i s referred to below such la the chryeotile variety. We have attached a copy of the Quebec Asbesto Mining Association pamphlet describing the Quebec Screen Tact, This te at provides the b a sis for the pricing o f asbestos fibre gradeet the longer the fibre the higher the price* 13 Tour underetanding as expressed in the f i r s t two sentences of your Question 1 i s absolutely correct* tfa would lik e , however to substitute the word "shorter" fo r "fin er" as basically i t le the length distribution which we are establishing with tbs Q.8. machina, In contrast, the word! "fin er" denotes other noonings in asbestos technology or as i t night raiste to specifications* Y Asbestos fibre is not comminuted in s standard n lllln g system. In fa c t every e ffo rt la nade in every process involved in the mining and n lllln g of asbestos not to coercnute i t , even to the slig h test degree. The reason fo r th is i s that higher prices ere obtained fo r longer fib res* Also, we would point out that the comminution of asbestos fib res i s a very d iffic u lt process in a production system. Such could be accomplished: by very severe grinding procedures of lengthly duration on a staple placed in a modern b a ll m ill or euch s ia il ia r Industrial grinding equipment, but when you consider the constant flow of asbestos fibre through a s i l l , I t la almost impossible to achieve any reduction in length of the fib re s by such eons* FLO S 0004029 As an example, several years ago Group 3 fibre (used primarily in asbestos te x t ile s ) , was in ever supply and one asbesto producer attempted to concinate th is grade in order to sake a Group 4, Experimental work carried out with a variety of equipment, proved to be unsuccessful, and the project wee abandoned. The inherent strength of the asbestos f ib r il 1 such that they r e s is t coin sti on to very high degree. C P C F L 0012735 CANADIAN JoKuS "Maivvillo AsL e sto S LIMITED ASBESTOS FIBRE DIVISION A sa m T E L 879-5431 P. 0. B O X 1 5 00 ASBESTOS, QUEBEC 001718 Kr* Sun c 13 o Donald R, Johnson Oil Company yago 3 Continued In standard s ill in g t y s u a , tbs longest fib res are aspirated f i r s t sines they i n tbs f i r s t to bs released fro the serpentine rock. Progressively, shorter sad shorter fibre lengths era recorerod, foliowing separate crushing sta g e s, and the shortest of tha Group 7 fibres are the l e s t to be aspirated, A gredo such aa *T consists of 2 o ss, on the 1/b fresh, 10 o ss, on tbe 10 sash end oae, in the pan (10 oeah). In the s illin g aye ta *, we sake e grade, such as HT, by adding the various fibre fractions such that the te s t on the Q,S, machine i l l seat the length gradations os shown above, 23 p "F lo eel" asb aato s l a the actu al grade recovered from the s i l l end i t haa never contained any longer fib r e s than those contained in tbe present product. The deposit fro which F lo cal la recovered contains only ab ort fib r e end we have never encountered say fib re Which when te ste d on a Q.S. sachlne would exceed 1 o s . on tbe 10 mash screen (1/I6th o f a pound). In other word, F lo sa l 1 not a product o f eosninutien, but rather i t Y represents tbs natural fibre length occurring in tbe deposit. 23 Unfortunately, there ere any things we do not knew about asbaatos with respect to i t s performance in a product or process. He do know tha* the asbestos fib re recovered fro e at* deposit d iffe rs in physical and cbemical properties. For exanpls, one fib re is s ilk y , another la harsh; one fibre i s iron fre e , another bee e high iron contentt on fibre i s high in chloride iron content, another i s low and e tc . Again, on brake lining manufacturer w ill t e l l us he cannot use our fibre because i t docs not produce tbe correct fric tio n al properties in h is lin in g s, whereas another buys sur fibre by the thousands of tons end would use no other. Very frankly we do not know why Flosal performs so wall in a d rillin g mod harass the ?M In Exsspls ZZX did not perform cooperatively. All we can say i s that " i t la the nature of the beast". In reading tha text of Fatent No, 579,8*0, we can conclude only that Group 7 fibre i s excluded and that Group H and ft m at be used to attain the necessary viscosities. F L O S 0004030 CDD C P C F L 0012736 / Canadian Jokivs-M.aiwille CO*LIMITED ASBESTOS FIBRE D IV ISIO N TEL. G79-S431 n P. . BOX 15 00 ASBESTOS, OUEBEC a sb 001719 Kr Donald X Johnson Sun Oll Cogpany faga 8 U Ter your further Infom at lau , * have attsehad a C e rtific a ta o f Analyali o f ^ - rloa a l provided by the Q.A.K.A. Eh rbrook Laboratory. You w ill note that I t would be c la s s if ie d es a erada 7R in Q.S, tarninology. X tr u s t that t h is rath er lengthly d issertatio n w ill be o f assistan ce to you Yours vary tru ly. MWH/bh eet Kr. Donald J . Qulgg, r h lllip s P e tr le o s Coapsny, BARTLESVILLE, Oklahoaa 70003. beet Kr. Jach L. Howe, Drilling Specialties Co,, BARTLESVILLE, Oklahoisa 7M03. Kr. H. M. B a rre tt, Drilling Speclaltie Co., BARTLESVILLE, Oklahoma 7H003. 8 . U. HEMDRY, (general Salea Manager CDD246904^\ FLO S 0004031 CPCFL 0012737