Entrance to bitumen mine, Pont-du-Chateau, Puy-de-Dome, Fr. 1928GrayscaleClapp Nitrate Negatives, Box
CO2 gas separators at, Martres, Puy-de-Dome, Fr. 1928GrayscaleClapp Nitrate Negatives, Box
W-dips from Chateau-gay dome, Puy-de-Dome, Fr. 1928GrayscaleClapp Nitrate Negatives, Box
Dolomite cp. at E9, close to oil wells, Gabian, France. 1928GrayscaleClapp Nitrate Negatives, Box
Entrance to bitumen mine, Pont-du-Chateau, Puy-de-Dome, France. 1928GrayscaleClapp Nitrate Negatives...
Bitumen bed in sand (Tertiary) Bastennes. 1929GrayscaleClapp Nitrate Negatives, Box
Cp. of bitumen in prospecting trench, Gaujacq, France. 1928GrayscaleClapp Nitrate Negatives, Box
Outcrop of tar sands on contact wi. breccias Gerzet Puy-de-Dome, France. 1928GrayscaleClapp Nitrate ...
Blotches of heavy oil n w. in sump-hole Mirabelle well, nr. Riom, Puy-de-Dome, Fr. 1928GrayscaleClap...
Village of Pont-du-Chateau site of neck from west Pont-du-Chateau, Puy-de-Dome, Fr. 1928GrayscaleCla...
An oil well of the Gov'n. Gabian, France. 1928GrayscaleClapp Nitrate Negatives, Box
Min. spr. ho. & site of oil seep, St. Boes, France. 1929GrayscaleClapp Nitrate Negatives, Box
Village of Pont-du-Chateau from the bridge, looking W. & site of neck Pont-du-Chateau, Puy-de-Dome, ...
A well of the Pechelbronn Co., pumping oil, Gabian, France. 1928GrayscaleClapp Nitrate Negatives, Bo...
Basalt breccia in Pont-du-Chateau, Puy-de-dome, Fr. 1928GrayscaleClapp Nitrate Negatives, Box
View from church at Brassempouy, Landes, France. 1929GrayscaleClapp Nitrate Negatives, Box
CO2 gas separators at, Martres, Puy-de-Dome, Fr. 1928GrayscaleClapp Nitrate Negatives, Box
W-dips from Chateau-gay dome, Puy-de-Dome, Fr. 1928GrayscaleClapp Nitrate Negatives, Box
Dolomite cp. at E9, close to oil wells, Gabian, France. 1928GrayscaleClapp Nitrate Negatives, Box
Entrance to bitumen mine, Pont-du-Chateau, Puy-de-Dome, France. 1928GrayscaleClapp Nitrate Negatives...
Bitumen bed in sand (Tertiary) Bastennes. 1929GrayscaleClapp Nitrate Negatives, Box
Cp. of bitumen in prospecting trench, Gaujacq, France. 1928GrayscaleClapp Nitrate Negatives, Box
Outcrop of tar sands on contact wi. breccias Gerzet Puy-de-Dome, France. 1928GrayscaleClapp Nitrate ...
Blotches of heavy oil n w. in sump-hole Mirabelle well, nr. Riom, Puy-de-Dome, Fr. 1928GrayscaleClap...
Village of Pont-du-Chateau site of neck from west Pont-du-Chateau, Puy-de-Dome, Fr. 1928GrayscaleCla...
An oil well of the Gov'n. Gabian, France. 1928GrayscaleClapp Nitrate Negatives, Box
Min. spr. ho. & site of oil seep, St. Boes, France. 1929GrayscaleClapp Nitrate Negatives, Box
Village of Pont-du-Chateau from the bridge, looking W. & site of neck Pont-du-Chateau, Puy-de-Dome, ...
A well of the Pechelbronn Co., pumping oil, Gabian, France. 1928GrayscaleClapp Nitrate Negatives, Bo...
Basalt breccia in Pont-du-Chateau, Puy-de-dome, Fr. 1928GrayscaleClapp Nitrate Negatives, Box
View from church at Brassempouy, Landes, France. 1929GrayscaleClapp Nitrate Negatives, Box
CO2 gas separators at, Martres, Puy-de-Dome, Fr. 1928GrayscaleClapp Nitrate Negatives, Box
W-dips from Chateau-gay dome, Puy-de-Dome, Fr. 1928GrayscaleClapp Nitrate Negatives, Box
Dolomite cp. at E9, close to oil wells, Gabian, France. 1928GrayscaleClapp Nitrate Negatives, Box