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- Some practical aspects of appraising coal-washing results
- Laboratory cleaning trials on a Pennsylvania anthracite in a baum-type jig and a dense-medium pilot plant
- Plant performance tests of the tromp dense-medium coal-cleaning process
- Washability examinations of coals from the Rocky Mountain and Pacific coast states
- Washability of coals from the Matanuska Valley and Beluga River fields, Alaska
- Performance of tables in cleaning Alaska coals
- Performance of Baum jigs in treating Rocky Mountain coals
- Washability studies and cleaning trials on coals from Pierce County, Wash.
- Predicted results of cleaning Appalachian coals at low density for sulfur reduction