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The 'Hecla Mining Co. Lakeshore Project' 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.


map background search result map search result map Black Jack Anomaly, Magnetic Survey Line No. 12 Harquahala, I.P. Traverse Line No. Open Pit Special West Sierrita Mtn Project, Sectional Data Sheet Line No. 6 Area 4, Aerial-Magnetic Location Plan and Geology Paisano Wash Area, I.P., Line No. 4, Spread 1 Morristown, I.P. Traverse Line No. 1 Sheet 1 Pinal, Vertical Intensity Magnetic Survey Contour Plan North Butte, I.P., Line No. 15E, Spreads 1 and 2 Brown's Peak Geophysics Pauline Project, Magnetic Data Map Christmas Mine Area, Total Intensity Mobile Magnetic Traverse 4 West Sierrita Mtn Project, Jalander Vertical Intensity Magnetic Profiles Binghampton Area, I.P., Line No. 28N, Spreads 1, 2 and 3 Bell Area, I.P., Line No. 12S, Spread 1 Twin Peaks Area, Line Number 500 East West Sierrita Mtn Project, I.P. Composite Profiles Line 2 Spread 1 Johnson Camp Area, I.P. Location and Interpretation Plan Harquahala, I.P. Traverse Line No. A Sheet 1 and 2 Twin Buttes Area Grover Heinrichs mining collection: Hecla Mining Co. Lakeshore Project West Sierrita Mtn Project, Sectional Data Sheet Line No. 6 West Sierrita Mtn Project, Jalander Vertical Intensity Magnetic Profiles West Sierrita Mtn Project, I.P. Composite Profiles Line 2 Spread 1