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A one-page Johns-Manville internal memo of December 17, 1973, a memo from D. R. Christensen to P. L. Earle, both of J-M's Research and Development Center in Manville, New Jersey, with copies to D. E. Hillier and G. L. Swallow at headquarters. Prepared by T. F. Antonson; the samples were taken December 14.
- Author
- D. R. Christensen
- Published by
- Johns-Manville
- Date
- December 17, 1973
- Number
- Bates S420-429
- Library no.
- ACL Doc 25546 · asbestosclaims.law/library/25546
- Rights
- From the Johns-Manville archive (file S420, industrial hygiene surveys and dust counts), produced in litigation (stamped "PRODUCED JM-83"). An internal company test report, republished for research and health-and-safety purposes.
Read or download
Read online Download the PDF Memo, December 17, 1973 · 1 pages · 140 KB
What it shows
The R&D Center cut ¾-inch Marinite 36A and 65A with a 7¼-inch Rockwell Model 315 portable circular saw, exhausting the saw hood and a modified open-face vacuum table to a Spencer portable baghouse. All four samples were at or under 0.4 fibers/cc, against the 2.0 limit. This is the best result in the series, reached with exhaust at both the blade and the table.
It is one of a series of 1973–74 sawing tests at the R&D Center that tried to bring Marinite cutting under the new 2.0 fibers/cc limit; see Marinite for the series.
Related
- Marinite and the SS Morro Castle disaster, our guide to the product
Cited on this site
Cite this document
D. R. Christensen. “J-M R&D Center, Sawing of Marinite 36A and 65A with a Rockwell Saw.” December 17, 1973. Bates S420-429. Johns-Manville. AsbestosClaims.Law Library, ACL Doc 25546. https://asbestosclaims.law/library/25546.
ACL Doc numbers and their short links never change. See how to cite the Library.
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