Marline Chrysotile Asbestos, Lobatsi, Botswana

The U.S. Bureau of Mines' Minerals Yearbook for 1954 reported that the Marline Chrysotile Asbestos company "had a substantial investment in mining and milling facilities at Lobatsi."¹ The yearbook described the deposit as "cross-fiber veins in dolomite associated with intrusive diabase," and said that drill records showed that rock "over a large area contains about 4 percent fiber."¹ It reported that "a mill built on the property has a capacity of 200 tons of fiber a month," and that "about 25 percent of that produced was of spinning grade."¹

The documents report this mine producing asbestos fiber for sale.¹

Location

Year by year

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

1954

• Worked: “had a substantial investment in mining and milling facilities at Lobatsi” (Marline Chrysotile Asbestos Corp., Ltd.), p. 12¹
• Description: “The deposit consists of cross-fiber veins in dolomite associated with intrusive diabase” (Marline Chrysotile Asbestos Corp., Ltd.), p. 12¹
• Reserves: “Drill records indicated that rock over a large area contains about 4 percent fiber” (Marline Chrysotile Asbestos Corp., Ltd.), p. 12¹
• Output: “About 25 percent of that produced was of spinning grade” (Marline Chrysotile Asbestos Corp., Ltd.), p. 12¹
• Mill: “A mill built on the property has a capacity of 200 tons of fiber a month” (Marline Chrysotile Asbestos Corp., Ltd.), p. 12¹

References

1. Minerals Yearbook: Asbestos Chapters, 1954 (January 1, 1955), p. 12.