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Heinrichs Geoexploration Co. Maps: Charleston, Magnetic Profile No. 4; 13 x 11 in.
Heinrichs Geoexploration Co. Maps: Charleston, Magnetic and Sp Profiles; 1 in. to 200 feet; 29 x 36 in.
Heinrichs Geoexploration Co. Maps: Charleston Mine Area, Mag Line No. 5; 1 in. to 60 feet; 11 x 9 in.
Heinrichs Geoexploration Co. Maps: General Surface Map of Charleston Mine; 1 in. to 60 feet; 66 x 40 in.
Heinrichs Geoexploration Co. Maps: Charleston Mine Area, Self Potential Profile Line 1; 1 in. to 100 feet; 26 x 12 in.
Heinrichs Geoexploration Co. Maps: Charleston, Geophysical Location Plan; 1 in. to 200 feet; 22 x 18 in.
Heinrichs Geoexploration Co. Maps: Charleston Mine Area, Mag Line No. 12; 1 in. to 60 feet; 11 x 9 in.
Heinrichs Geoexploration Co. Maps: Charleston Mine Area, Mag Line No. 4; 1 in. to 60 feet; 11 x 9 in.
Heinrichs Geoexploration Co. Maps: Charleston Mine Area, Self Potential Profile Line 2; 1 in. to 100 feet; 25 x 12 in.
The 'Charleston Mine' file is part of the Grover Heinrichs mining collection. Grover was the Vice President of Heinrichs GEOEXploration, located in Tucson, Arizona. The collection contains over 1,400 folders including economic geology reports, maps, photos, correspondence, drill logs and other related materials. The focus of much of the information is on the western United States, particularly Arizona, but the collection also includes files on mining activity throughout the United States, foreign countries, and 82 mineral commodities.
Heinrichs Geoexploration Co. Maps: Charleston Mine Area, Mag Lines No. 7, 8, 9; 1 in. to 60 feet; 11 x 8 in.
Heinrichs Geoexploration Co. Maps: Charleston Mine Area, Mag Line No. 11; 1 in. to 60 feet; 11 x 8 in.
Heinrichs Geoexploration Co. Maps: Index Map of Charleston Mine Area; 1 in. to 2000 feet; 19 x 20 in.
Heinrichs Geoexploration Co. Maps: Charleston Mine Area, Mag Line No. 13; 1 in. to 60 feet; 11 x 10 in.
Heinrichs Geoexploration Co. Maps: Charleston Mine Area, Self Potential Profile Line 3; 1 in. to 100 feet; 20 x 11 in.
Heinrichs Geoexploration Co. Maps: Charleston, Magnetic Profile No. 3; 8 x 11 in.
Heinrichs Geoexploration Co. Maps: Charleston, Magnetic Profile No. 1; 13 x 11 in.
Heinrichs Geoexploration Co. Maps: Charleston, Magnetic Profile No. 2; 13 x 11 in.
Heinrichs Geoexploration Co. Maps: Charleston Mine Area, Mag Line No. 3, Self Potential Line 4; 1 in. to 60 feet; 11 x 9 in.
Heinrichs Geoexploration Co. Maps: Charleston Mine Area, Mag Line No. 6 and 6 ext.; 1 in. to 60 feet; 11 x 9 in.
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