Born-Digital or AnalogAnalogTranscriptCoal. Wyoming Production begins at Black Thunder Mine, expected to be largest coal operation in U.S. RM D 27, 1977 p.84 Feature on mining and civil engineer, Stewart Kennedy, who worked with development of coal mining in Wyoming. Bits and Pieces vll #4 S 1977 p. 1-6 Comment on agreement between Chicago and Northwestern, and Burlington Northern Railways over low-sulphur coal tracts in Wyoming's Powder River Basin. Trains Magazine F 1978CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
