Box 291
Contains 30 Results:
Champion Mine: Fuse, 1940-1941
This subseries contains equipment records, correspondence, violations of rules and grievances, maps, and drawings. Records relate primarily to the Champion Mine, but some Champion Mill material is also included.
Champion Mine: Hoist Drum No. 3, 1941
This subseries contains equipment records, correspondence, violations of rules and grievances, maps, and drawings. Records relate primarily to the Champion Mine, but some Champion Mill material is also included.
Champion Mine: Mining Methods and Costs (includes blueprints), 1931-1932
This subseries contains equipment records, correspondence, violations of rules and grievances, maps, and drawings. Records relate primarily to the Champion Mine, but some Champion Mill material is also included.
Champion Mine: William Conibear's (Cleveland-Cliffs Iron Company) Safety Inspection, 1930
This subseries contains equipment records, correspondence, violations of rules and grievances, maps, and drawings. Records relate primarily to the Champion Mine, but some Champion Mill material is also included.
Coal Consumption at No. 3 and 4 Steam Plants, 1928-1937
This subseries contains equipment records, correspondence, violations of rules and grievances, maps, and drawings. Records relate primarily to the Champion Mine, but some Champion Mill material is also included.
Correspondence: Equipment Manufacturers (George J. Salmon's file), 1919-1920
This subseries contains equipment records, correspondence, violations of rules and grievances, maps, and drawings. Records relate primarily to the Champion Mine, but some Champion Mill material is also included.
Heavy Medium Separation Method Tests at Champion Mine (Michigan College of Mining and Technology), 1933-1939
This subseries contains equipment records, correspondence, violations of rules and grievances, maps, and drawings. Records relate primarily to the Champion Mine, but some Champion Mill material is also included.
Hoisting Rope Inspections (monthly), 1935-1936
This subseries contains equipment records, correspondence, violations of rules and grievances, maps, and drawings. Records relate primarily to the Champion Mine, but some Champion Mill material is also included.
Hoisting Rope Inspections (monthly), 1937
This subseries contains equipment records, correspondence, violations of rules and grievances, maps, and drawings. Records relate primarily to the Champion Mine, but some Champion Mill material is also included.
Hoisting Rope Inspections (monthly), 1938
This subseries contains equipment records, correspondence, violations of rules and grievances, maps, and drawings. Records relate primarily to the Champion Mine, but some Champion Mill material is also included.