Barbara Diemer to Dennis H. Markusson on J-M's Interest in Other Mines and Mills (1978)

A one-page Johns-Manville memo of April 4, 1978, from Barbara Diemer, a legal assistant, to Dennis H. Markusson of J-M's legal department, listing the mines and mills outside J-M's own operations in which it had an interest through its subsidiary Canadian Johns-Manville. She named three: Advocate Mines at Baie Verte, Newfoundland, about 40 percent owned and still mining chrysotile, with J-M and Eternit its only customers; and the Reeves and Munro mines in Ontario, both wholly owned, which shared a mill.

What it shows

Diemer wrote that Advocate's fiber, she understood, "was used in our Pipe Plant." Reeves mined chrysotile from about 1970 until 1975, "almost all of which was used solely by JM," and the fiber it sold went to make Asbaltic; Munro ran from about 1957 to about 1964. Both closed when they ran out of fiber. The memo was probably part of the legal department's research for asbestos lawsuits; it is stamped "Privileged J-M 83." On conditions at Advocate, see W. B. Reitze to Dr. Paul Kotin on Asbestos Tailings Dust at the Advocate Mine and in Quebec (1978).