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Names
- United States. Bureau of Mines[remove]11
- Dean, R. S. (Ralph S.)4
- Doerner, H. A. (Henry Alfred), 1889-4
- United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Mining and Natural Resources4
- United States. Congress. Senate. Special Committee Investigating the National Defense Program4
- United States. Bureau of Mines. Metallurgical Division3
- Finch, John Wellington, 1873-19512
- Holland, Ernest Otto, 1874-19502
- United Mine Workers of America2
- Chicago Development Company1
- Fieldner, Arno Carl, 1881-19661
- Leavy, Charles Henry, 1884-19521
- McLaughlin, John J.1
- National Coal Association1
- Pinch, John W.1
- United States. Department of Labor1
- West Virginia Coal Association1
