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Jennifer Obrad
Jennifer Obrad
Geology
Mining engineering
Coal
Stratigraphy
Archaeology
4
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COMPARING THE GRID ANALYSIS METHOD OF PLANT BEARING COAL BALLS WITH DIGITAL IMAGE ANALYSIS
2021
Scott Lakeram
Benjamin Muddiman
William A. DiMichele
Michael P. Donovan
Ivo A.P. Duijnstee
Scott D. Elrick
Cindy V. Looy
Jennifer Obrad
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65 YEARS OF COAL MINED OUT AREAS IN ILLINOIS - EVOLUTION OF COAL MINED OUT AREA MAPS AT THE ILLINOIS STATE GEOLOGICAL SURVEY (ISGS)
2016
Alan Myers
Cheri A. Chenoweth
Jennifer Obrad
Chris Korose
Scott D. Elrick
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A NEW ONLINE HANDBOOK OF ILLINOIS STRATIGRAPHY
2016
Jennifer Obrad
W. John Nelson
Ian Johnson
Alan Myers
Chris Korose
Scott D. Elrick
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Photographic history of coal mining practices in Illinois
2008
Cheri A. Chenoweth
Alan Myers
Jennifer Obrad
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