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Subject
- Geographic Subject: Indiana[remove]8
- Topical Subject: Geology[remove]8
- Topical Subject: Mines and mineral resources[remove]8
- Topical Subject: Geology, Stratigraphic5
- Topical Subject: IGS Annual Reports4
- Topical Subject: Coal mines and mining2
- Topical Subject: Limestone2
- Geographic Subject: Clark County (Ind.)1
- Geographic Subject: Clay County (Ind.)1
- Geographic Subject: Fayette County (Ind.)1
- Geographic Subject: Floyd County (Ind.)1
- Geographic Subject: Franklin County (Ind.)1
- Geographic Subject: Harrison County (Ind.)1
- Geographic Subject: Scott County (Ind.)1
- Geographic Subject: Union County (Ind.)1
- Geographic Subject: Wayne County (Ind.)1
- Topical Subject: Coal1
- Topical Subject: Coal reserves1
- Topical Subject: Road materials1