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Bibliography of investment and operating costs for chemical and petroleum plants,January-December 1969
Mining and conversion of oil shale in a gas combustion retort
Basic estimated capital investment and operating costs for underground bituminous coal mines :mines with annual production of 1.06 to 4.99 million tons from a 72-inch coalbed
An economic analysis of oil shale operations featuring gas combustion retorting
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,
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 : revision of Information circular 8641