Document gYbNLnvy56zegbyXq1yKqL19

OPERATING BULLETINS HISTORY SHEET Ofctt _ aucCTi __ 2r7=k2------------- \ _____Perf-A--Tape Joint System cv Bnuxrri, ^ REVISION ________ CANCELS tEQUESTED st: J. 7. Gill, Besearch Department SUUETIN M. 61-7-22JU . /For." A* Berios Floats Because of esrrat short supply of asbestos floats, plants to sake tha fallowing substitutians^in the manuftcture of Perf-A--Tape joint ceaent: m ph <nw eeasnt: S% AUD (1:2) pica $ to 7% asbestos floats as required netrfi the supply of asbestos floats is exhausted, Then use 10? A20. . `. _. 1ok alkaline cement: use present fonzola until supply of asbestos floats is exhausted, then use 13? AMD. Proposed sub3titiutioa will permit continued production of joint cement. Cement texture will be slightly grainier- more noticeable In the low alkinity formula than in the high. t Qualify will not be otherwise impaired. \i - Effect an costs will wary depending on the plant. At Gypsun, the current cost of asbestos floats is $19.01 per U lbs. and AMD $15.76. - PUi.SE SICK 6ULUTI* hEE 3eot. 1 name .25.1 H. H. Huntsicker Initials . Date Sinned rHk vo," -Zj-lM 170-P ' M, G. Allison lid ~.~. fSb ~?xr~ 1ir 170--7 C. W. Desgrey JYin r--------- 170-C K. R. Eckrota TLlMjL 170-1 J. R. Newberry 170-E P. E. Roberts . _1SS__ ~170-J J. P. Sanger J. IT. Timons J. 7. Butler ` C7~/ -4&/K- K-3092 Rev. 6/1*7 (U.S.A.) ClffCUllITD ami ^*7 Operation* .'tiff Manager Ditte 3 -7- 4-9 HilLEO : 3 "Sf "U ^ ' onz: SHEET 1- DP007 1029