Basic estimated capital investment and operating costs for underground bituminous coal mines.Mines with annual production of 1.03 to 3.09 million tons from a 48-inch coalbed,

Author: Katell, Sidney.
Additional Authors: Hemingway, E. L.,
Year: 1974
Document Type: USBI
Issuing Agency: U.S. Bureau of Mines
SUDOC: I 28.27:8641
Series: United States. Bureau of Mines. Information circular
Report Number: 8641
Subject: Bituminous coal--Costs
Link: https://hdl.handle.net/2027/mdp.39015078462986

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