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A Johns-Manville internal memo of November 26, 1979, from L. J. Greco at Manville, New Jersey, to G. L. Swallow in Denver, copied to C. L. Farr at the Penbryn plant, with a page of photographs.
- Author
- L. J. Greco
- Published by
- Johns-Manville
- Date
- November 26, 1979
- Number
- Bates S420-437–S420-439
- Library no.
- ACL Doc 25553 · asbestosclaims.law/library/25553
- 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 and photographs · 3 pages · 252 KB
What it shows
On November 6, 1979, J-M sampled contract workers in a Camden, New Jersey, warehouse as they cut and drilled 1-inch Molten Metal Marinite sheets for new forming tubes at the Penbryn plant, using Nilfisk dust equipment and wearing respirators. The saw and drill operators and helpers measured 0.5 to 1.6 fibers/cc against the 2.0 limit; changing the vacuum bag gave a ceiling reading of 2.8.
Greco writes that the visible dust while cutting and drilling was slight, but "the worst visible conditions were caused by the handling of the Marinite sheets." He suggested more care in handling, and says "the second set of samples yielded lower results due to the workers care in handling material."
Related
- Marinite and the SS Morro Castle disaster, our guide to the product
Cited on this site
Cite this document
L. J. Greco. “J-M Special Industrial Hygiene Survey of Cutting Molten Metal Marinite Sheets.” November 26, 1979. Bates S420-437–S420-439. Johns-Manville. AsbestosClaims.Law Library, ACL Doc 25553. https://asbestosclaims.law/library/25553.
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