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4/21/2021 9:15 AM 4864020 BIA Administrarive Report 23 - Mineral Resource Information for the Cheyenne River Indian Reservation South Dakota 1976.pdf
8/29/2005 11:48 AM 1768417 SDGS G-02 map - Coal Fields of Northwestern South Dakota 1947.pdf
8/29/2005 2:14 PM 2595098 SDGS GQ62K-040 - Areal Geology of the Coal Springs Quadrangle 1955 .pdf
6/19/2006 11:22 AM 1175737 SDGS RI-003 - A Preliminary Report of the Coal Resources of South Dakota 1930.pdf
8/29/2005 3:17 PM 23318352 SDGS RI-010 - The Isabel-Firesteel Coal Area 1931.pdf
6/19/2006 11:45 AM 293135 SDGS RI-012 - Slacking Properties of South Dakota Coals 1950.pdf
6/21/2006 12:39 PM 1026991 SDGS RI-014 - Effective Fuel Values of South Dakota Coal 1933.pdf
9/7/2006 9:01 AM 2595173 SDGS RI-022 - The Stoneville Coal Area 1934.pdf
4/21/2021 9:13 AM 26789801 USGS Bulletin 1055 - Uranium in coal 1959.pdf
4/21/2021 9:08 AM 848460 USGS Circular 159 - Lignite Resources of SD 1952.pdf