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Columbiana County |
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Coal: RI 21, 29, 34, 36; IC 44
Coal thickness and overburden maps, East Palestine quadrangle
Conemaugh formation: B 17
General: V 3; B 28
Glacial/Quaternary geology: M 2; B 68; RI 12, 129; OF 296
Kensington quadrangle, bedrock geology: RI 55
Minerals: B 69
Minerva quadrangle, bedrock geology: RI 65
Oil and gas, "Big Lime" or deeper wells: OF 19
Sand and gravel: RI 131
Structure map, Berea: OF 127
Structure map, Onondaga: OF 165
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