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Montana Mining Geology Maps [148101]

Currency:USD Category:Collectibles / Mining Start Price:50.00 USD Estimated At:100.00 - 200.00 USD
Montana Mining Geology Maps  [148101]
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Three mining geology maps from Montana.
A) Two hand-drawn diagrams of the Syndicate Vein. They depict the location and a shaft of the Syndicate Vein. There are notes that indicated the weak and strong points of the vein. Both diagrams are approx. 8.5 x 11, very good condition. Most likely from the early 20th century.
B) Blueprint diagram of "Details of Tumbling Bar. #3 Shaft. Black Rock Mine. Butte and Superior Copper Co., Butte, Montana." Drawn on February 4, 1916. Approx. 34 x 26, good condition, some minor tears around the edges. City: State:Montana Date: