Manual of Instructions for Compiling Reports on Cost and Production Tonnage (cost Form No. 4) for Bituminous Coal Mines with an Average Daily Productive Capacity in Excess of 50 Tons And/or All Mines Shipping Directly by Rail Or River Regardless of Daily Capacity
Author : United States. Bituminous Coal Division
Publisher :
Page : 64 pages
File Size : 10,41 MB
Release : 1940
Category : Bituminous coal
ISBN :