Alp Quadrada mine, close to Alp Quadrada, near Poschiavo, Switzerland

Documents in our library name Alp Quadrada mine at close to Alp Quadrada, near Poschiavo, Switzerland as an asbestos mine, run by Studiengesellschaft für Asbestgewinnung.¹ They report it working in 2 years between 1942 and 1948.¹

The documents report small or short-lived production of asbestos fiber for sale.¹

Location

Output the documents report

Figures as printed, in the units each document uses (short tons before about 1990, metric tons after, in most U.S. chapters). Some are a year's output, some a daily rate or a capacity, some a company's total rather than this mine's alone; the statement for that year below says which.

Year by year

Every statement about this mine in the documents, in each document's own words, by the year it is about.

1942

• Opened: “The mine has been worked since 1942” (Studiengesellschaft für Asbestgewinnung), as reported by Bureau of Mines, Mineral Trade Notes, p. 12¹
• Output: “The mine has been worked since 1942, producing 85.2 metric tons from 1942 to 1946” (Studiengesellschaft für Asbestgewinnung), as reported by Bureau of Mines, Mineral Trade Notes, p. 12¹

1948

• Worked: “are mined by Studiengesellschaft für Asbestgewinnung” (Studiengesellschaft für Asbestgewinnung), as reported by Bureau of Mines, Mineral Trade Notes, p. 12¹

References

1. Minerals Yearbook: Asbestos Chapters, 1948 (January 1, 1949), p. 12.