Pennsylvania Geological Survey - Historical Photographs

Active Filters:
  • Date = 1929-04-23

About This Collection

This collection includes photographs from the Pennsylvania Geological Survey Historical Photographs Collection.

Displaying 25 items
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Active quarry
Archbald coking apparatus
Archbald coking apparatus
Beekmantown dolomite railroad cut
Bent strata
"Coal mine" excavation
Crushed and molded
Crushed, overturned anticline
Crusher house and top of incline
Dipping and slightly fractured Bellefonte strata
Discharge from mine pump
Folded and faulted strata
Folded strata
Folded strata
Folded strata
Folded strata
Highly dipping Bellefonte strata
Marble
Marble
Old quarries and bedding face