You don't need the product names or old records. No fee unless we recover compensation for your family.
A one-page Johns-Manville internal memo of April 11, 1974, 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 April 9.
- Author
- D. R. Christensen
- Published by
- Johns-Manville
- Date
- April 11, 1974
- Number
- Bates S420-139
- Library no.
- ACL Doc 25551 · asbestosclaims.law/library/25551
- 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, April 11, 1974 · 1 pages · 147 KB
What it shows
All three tests used a Spencer portable baghouse. Cutting 1-inch Marinite 36A with a Skilsaw Model 553 portable circular saw gave a peak of 75.4 fibers/cc at the operator and 3.0 in the area, against the 10 fibers/cc ceiling for peak samples. Drilling ¼-inch Terraceran gave 0.2, and sawing ¼-inch Upson Naples millboard gave 0.7.
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, Upson Millboard and Terraceran.” April 11, 1974. Bates S420-139. Johns-Manville. AsbestosClaims.Law Library, ACL Doc 25551. https://asbestosclaims.law/library/25551.
ACL Doc numbers and their short links never change. See how to cite the Library.
Talk with an asbestos lawyer
Start with what you remember, and we'll take it from there.
This page is provided for general informational purposes and does not constitute legal advice. Every asbestos case turns on its own facts, exposure history, diagnosis, deadlines, available evidence, and applicable law. Reviewing this page does not create an attorney-client relationship. For advice about your specific situation, call 833-4-ASBESTOS for a free case review.