Preliminary evaluation of underground coal gasification at Hanna, Wyo. [Investigation of feasibility of gasifying subbituminous coal underground; H/sub 2/-rich gas having heating value of 100-150 Btu/sel produced] Page: 3 of 20

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Campbell, G.G.; Brandenburg, C.F. & Boyd, R.M. Preliminary evaluation of underground coal gasification at Hanna, Wyo. [Investigation of feasibility of gasifying subbituminous coal underground; H/sub 2/-rich gas having heating value of 100-150 Btu/sel produced], report, October 1, 1974; United States. (digital.library.unt.edu/ark:/67531/metadc1052373/m1/3/: accessed December 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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