One-day Field Trip D, May 20, 1979. Prepared for Ninth International Congress of Carboniferous Stratigraphy and Geology (IX-ICC)Ope
The district at hand is one somewhat remote from any known field of productive Coal Measures, but be...
At head of title: State Geological Survey, Department of Mining Engineering, University of Illinois,...
Illinois coals range from high volatile C to high volatile A bituminous rank. The rank increases gra...
One-day Field Trip J, May 27, 1979. Prepared for Ninth International Congress of Carboniferous Strat...
Includes bibliographical references (p. 54).Roof failures in underground coal mines are related to t...
One-day Field Trip D, May 20, 1979. Prepared for Ninth International Congress of Carboniferous Strat...
Cover title."Final report, contract no. H0242017."Includes bibliographical references.v. 1. Summary ...
Cover title."Final report, contract no. H0242017."Includes bibliographical references.v. 1. Summary ...
Includes bibliographical references (p. 54).Roof failures in underground coal mines are related to t...
Cover title."Reprinted from the Transactions, Illinois State Academy of Science, vol. 31, no. 2, pp....
Each of the most heavily mined coal seams in the Western Kentucky Coal Field, as indicated by analys...
Each of the most heavily mined coal seams in the Western Kentucky Coal Field, as indicated by analys...
Reprinted from Economic geology, vol. 44, no. 1, pp. 1-12, January-February, 1949.Bibliography: p. 1...
Illinois mining investigations prepared under a cooperative agreement between the Illinois State Geo...
The district at hand is one somewhat remote from any known field of productive Coal Measures, but be...
The district at hand is one somewhat remote from any known field of productive Coal Measures, but be...
At head of title: State Geological Survey, Department of Mining Engineering, University of Illinois,...
Illinois coals range from high volatile C to high volatile A bituminous rank. The rank increases gra...
One-day Field Trip J, May 27, 1979. Prepared for Ninth International Congress of Carboniferous Strat...
Includes bibliographical references (p. 54).Roof failures in underground coal mines are related to t...
One-day Field Trip D, May 20, 1979. Prepared for Ninth International Congress of Carboniferous Strat...
Cover title."Final report, contract no. H0242017."Includes bibliographical references.v. 1. Summary ...
Cover title."Final report, contract no. H0242017."Includes bibliographical references.v. 1. Summary ...
Includes bibliographical references (p. 54).Roof failures in underground coal mines are related to t...
Cover title."Reprinted from the Transactions, Illinois State Academy of Science, vol. 31, no. 2, pp....
Each of the most heavily mined coal seams in the Western Kentucky Coal Field, as indicated by analys...
Each of the most heavily mined coal seams in the Western Kentucky Coal Field, as indicated by analys...
Reprinted from Economic geology, vol. 44, no. 1, pp. 1-12, January-February, 1949.Bibliography: p. 1...
Illinois mining investigations prepared under a cooperative agreement between the Illinois State Geo...
The district at hand is one somewhat remote from any known field of productive Coal Measures, but be...
The district at hand is one somewhat remote from any known field of productive Coal Measures, but be...
At head of title: State Geological Survey, Department of Mining Engineering, University of Illinois,...
Illinois coals range from high volatile C to high volatile A bituminous rank. The rank increases gra...