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Names
- United States. Bureau of Mines[remove]29
- United States. Congress. Senate. Special Committee Investigating the National Defense Program12
- Doerner, H. A. (Henry Alfred), 1889-11
- United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Mining and Natural Resources7
- Dean, R. S. (Ralph S.)6
- Ickes, Harold L. (Harold LeClair), 1874-19524
- United States. Bureau of Mines. Metallurgical Division4
- Finch, John Wellington, 1873-19513
- United Mine Workers of America3
- Fieldner, Arno Carl, 1881-19662
- Holland, Ernest Otto, 1874-19502
- Leavy, Charles Henry, 1884-19522
- National Coal Association2
- Sayers, R. R. (Royd Ray), 1885-19652
- United States. Mine Safety and Health Administration2
- Wallgren, Monrad C. (Monrad Charles), 1891-19612
- Chapman, Oscar L. (Oscar Littleton), 1896-19781
- Chicago Development Company1
- Coons, A. T.1
- Fortas, Abe, 1910-19821
