Document vVNv5ymzM0ymmwxBv20o8bXGR

GRACE December 3 6, 1977 R.M. Vlniruj. Prwidrttl CMclwcfltn PrtxJvcH Division W.E. Gwi & Co. Cambridge, Man. 02HD \&\7I flPt-UOO Mr. F. L. Herron, Jr, 0. M. Scott & Sons 333 North Maple Street Marysville, Ohio A3040 . ' * C_ ^ A \ '1 . Mr: I* Lrr: _. "TTk .- -i.`< ling between our two gronps at Scott House was . o::i newly valuable to us.. We now have a much better under- standing of Scott's ranking of several aspects of the Jtremo- litc question as well as your concerns:. ' ~ During the meeting,, you asked that 'we share information on our tests concerning the level of tremoliee in Turf ' builder. Attached are Internal Grace reports of tests per formed on 14 bags of Turf Builder received from Scntf on November 11, 197}, which are for. your use and information only. By separate memo, I hove asked Dr. Ducckcr to snnd tost procedures used in the determinations to Mr.'Allan Davidson. . As you enn see, the reports indicate tlmt.no trenolite was detected in the finished product. During application, no respirable free-orn tremolite was found in the user's brenthiug zone. Please* understand that we believe these reports to be true, and accurate. However, we etui assume no responsibility Tor the use of tho reports by Urntt nor r;m we know l:ow wclI the samples tested may represent typical Scott Turf Builder production. The most recent information described above generally c.onEirms an earlier and less rigorous test In March 1977 of Turf Builder in which product assay showed no detectable trcuolltc and air samples during use showed 0.15 to 0.17 f/ml (representing one fiber in 50 fields on filters opera ting over a 23-minute sampling period). Background fiber ,t tU l > N. ' i ,i V . * , l. f ct Mr. F- t*. Herron. Jr. December 1&-, 1977 Fage 2 .{ levels were net monitored belore-or during the earlier test, so ve would have no way of determining whether the fibers observed wero from the use of Turf Builder or from background contamination. It is quite possible that whet we were seeing ves from the background. ' ' . These reports hove caused us to speculate chat something* about the Trionize process or Scott's equipment or procedures may be removing or binding the respirable free-form tremolite asbestos present* ill the vcmiciilite ore. We hope you will ..... give corfsiHerat io> to our request to jointly study this possi bility. "* Finally, we want'you to know that vmir business represents :iu iiM'orlan'. Jnng-r.miii* part i*f lb-- f.ilthy mine Miipu; . V."- ,i|.* f)ni i n f-i i :it > : .!* In !*vi*-|.-. t liftt --n i in -mi vcitiicu t i L-* c's'crnf t.'I < t-i I :.** r .'Iiaina i-vicmi `j ' ' ' Very i yi yours. V W a }///. v'7^..k;v/ pwjwwajjees-TTi '.' .V.,'*.sr4' _ RMV/J5LD Attachments R. M. Vining 6^^, -j-* bW< ^ rJUci | !.. ! .A.. _ jr;v*> 1 , tt-KW I--- - I ; <j\* I * o 1 sJ-6\wA-A'\ : t * .... _r-- r- irR-CLT7 K-r 1: r _L SC3J0OO931