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  • Tags: Iron dike

http://archives.library.eou.edu/images/2010.2.2175.jpg
"Baker [County] area mines, Sumpter, Oregon - circa 1901-1903 - Copper Mines of the Indiana Mining Company Office Purphyry [periphery?] Dike - Footwall here Ore Vein 400 Ft. wide 20 Ft. Shaft Hoisting Plant Barn Boarding House Hanging Wall Iron Dikeā€¦

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