Pennsylvania Geological Survey - Historical Photographs - Browse all items - Pennsylvania Photos and Documents

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Pennsylvania Geological Survey - Historical Photographs - Browse all items - Pennsylvania Photos and Documents

Cornwall Iron Mine

Subject	Metallic Mineral Resources
Creator	Engle, H. M.
Date	1913-08

Cornwall Iron Mine

Subject	Metallic Mineral Resources
Creator	Engle, H. M.
Date	1913-08

Cornwall Iron Mine

Subject	Metallic Mineral Resources
Creator	Bolles, William H.
Date	1971-05-11

Cornwall Iron Mine

Subject	Metallic Mineral Resources
Creator	Engle, H. M.
Date	1913-08

Cornwall Iron Mine

Subject	Metallic Mineral Resources
Creator	Engle, H. M.
Date	1913-08

Cornwall Iron Mine open pit

Subject	Metallic Mineral Resources
Creator	Geyer, Alan R.
Date	1952

Cornwall Iron Mine open pit

Subject	Metallic Mineral Resources
Creator	Geyer, Alan R.
Date	1952

Cornwall Mine, open pit, looking east

Subject	Metallic Mineral Resources
Creator	Geyer, Alan R.
Date	1952

Cornwall open pit

Subject	Metallic Mineral Resources
Creator	Geyer, Alan R.
Date	1952

Cornwall Ore Bank

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-05-23

Cornwall Ore Bank

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-05-23

Cornwall Ore Bank

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-05-23

Cornwall Ore Bank

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-05-23

Cornwall Railroad cut, Buffalo Springs Formation

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1961-02

Cornwall railway station

Subject	Cities, Towns, and Buildings
Creator	Bolles, William H.
Date	1972

Crag of Pottsville conglomerate cropping out on end of Sharp Mountain

Subject	Stratigraphy

Cryptozoon, Millbach Formation

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1958

Cryptozoon reef in Schaefferstown limestone

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1953

Dam foundation in Triassic conglomerate

Subject	Engineering Geology
Creator	Bolles, William H.
Date	1971-05-27

Dam foundation in Triassic conglomerate

Subject	Engineering Geology
Creator	Bolles, William H.
Date	1971-05-27

Derry Township sanitary landfill

Subject	Environmental Geology
Creator	Bolles, William H.
Date	1970

Diabase dike in sandstone, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-08-17

Diabase footwall

Subject	Metallic Mineral Resources
Creator	Geyer, Alan R.
Date	1952

Dike at Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-08-17

Dike in limestone, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-08-17

Drilling for stripping

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-05-23

East end "Middle Hill" pit, Cornwall

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1922-08-17

Epler Formation in small quarry

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1968

Face of trap cliff in "Big Hill"

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1934-08-10

Face of trap cliff in "Big Hill"

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1934-08-10

Fault contact

Subject	Stratigraphy

Faults in "Mill Hill" slate

Subject	Structure-Faults
Creator	Geyer, Alan R.
Date	1955

Faults in the "Mill Hill" slate

Subject	Structure-Faults
Creator	Geyer, Alan R.
Date	1955

Field trip, Society of Economic Geologists

Subject	Metallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951
Date	1925-05-23

Flat, pebble breccia

Subject	Sedimentary Rocks
Creator	Geyer, Alan R.
Date	1961

"Flat-pebble" breccia beds in Richland Formation

Subject	Sedimentary Rocks
Creator	Geyer, Alan R.
Date	1965

Fold in Conococheague limestone

Subject	Nonmetallic Mineral Resources
Creator	Geyer, Alan R.
Date	1953

Friable limestone

Subject	Stratigraphy
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Hammer Creek Formation sandstone

Subject	Stratigraphy
Creator	Geyer, Alan R.
Date	1969

H. E. Millard lime plant

Subject	Nonmetallic Mineral Resources
Creator	Foose, Richard Martin, 1915-
Date	1940-08-06

H. E. Millard limestone quarry

Subject	Nonmetallic Mineral Resources
Creator	Foose, Richard Martin, 1915-
Date	1940-08-06

Horizontal folds, Buffalo Springs Formation

Subject	Structure-Folds
Creator	Geyer, Alan R.
Date	1961-02

Incline of small coal mine

Subject	Nonmetallic Mineral Resources

Incline of small coal mine

Subject	Nonmetallic Mineral Resources
Creator	Moseley, John Reed
Date	1950-08

Indiantown Gap

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Interstate 81 bridge construction over the Swatara River, Swatara Gap

Subject	Interstate Highway
Creator	Bolles, William H.
Date	1971

Interstate 81, view of Swatara Gap at Lickdale

Subject	Interstate Highway
Creator	Bolles, William H.
Date	1971

Iron Mine

Subject	Metallic Mineral Resources
Creator	Bolles, William H.
Date	1971-05-11

Irregular weathering of limestone into soil

Subject	Nonmetallic Mineral Resources
Creator	Ashley, Geo. H. (George Hall), 1866-1951

Lake in Monroe Valley

Subject	Topography
Creator	Ashley, Geo. H. (George Hall), 1866-1951