Modern Coal Preparation in the United States
MY SUBJECT is one which would require several speakers and many hours of time for adequate presentation in all its many facets. Because of the widely varying market requirements and coal seams mined, the coal industry of the United States bas of necessity employed many types of preparation facilities to satisfy its needs. Predominance of Baum-type jigs, however, bas marked the mechanical cleaning installations since the early thirties, and these machines continue to hold the lead.
Coal, dry cleaning, jig, plant, Truax Traer Coal Company, United States, Dryers, Drying, Fines, Installation, Markets, mining, Plants, United States