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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

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


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