A newspaper account of the March 1872 mining activities of David Lyman Blacker and his partner John Keating in Radersburg, Montana.
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Quartz Mining at Radersburg.
Keating & Blacker are vigorously at work taking out quartz from the Keating and Ohio lodes. They have nearly 4,000 tons of fine ore on the dump, which will average about $16 per ton. Their mill has been idle since last fall, but it has been thoroughly repaired and will commence crushing in about two weeks.