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The 'Yuma County General - Bonanza' 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 Prince George Plan and Section Copper Hill Claim Map Chico Mines Location of Drill Holes on Ironwood, Bat and Buddy Boy Claims Bagdad District Location Map Bobtail Surface and Underground Map Drill Hole Locations E+E Morgan Lost Mine Group, Drill Hole Map Aravaipa Mining District Claim Map Buckeye Wash Topographic Map Jay Uranium Claims, Location Map Bagdad Extension, I.P. Traverse Line No. 5 Bagdad, I.P., Line No. 4, Spread 1 I.P. and Geochem Progress of Bagdad Area Bagdad-Mammoth Area, I.P. Traverse Line No. 2 Bagdad, I.P., Line No. 2, Spread 1 Bagdad-Mammoth Area, I.P. Traverse Line No. 4 Grover Heinrichs mining collection: Yuma County General - Bonanza