Oil
Stairs climb the outside of an oil tank near North Texas' Hagerman National Wildlife Refuge.
Pumpjacks at sunrise in the Hagerman National Wildlife Refuge, Texas.
The pipe-laying ship Lewek Express, docked at Pelican Island, Galveston, Texas.
Pumpjacks extract petroleum products on a peninsula of the Big Mineral Arm of Lake Texoma at North Texas' Hagerman National Wildlife Refuge.
Laid-up oil platforms at Pelican Island, Galveston, Texas.
The sun rises on a pumpjack on a ridge near Pottsboro, Texas.
The sun rises on laid-up oil platforms at Pelican Island, Galveston, Texas.
The Ocean Star Offshore Drilling Rig & Museum's derrick is backlit by the afternoon sun in Galveston,Texas'
A pumpjack is silhouetted by the sun at Texas' Hagerman National Wildlife Refuge.
The offshore supply ship Caballo Maya, docked adjacent to jack-up oil platforms at Pelican Island, Galveston, Texas.
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