KARNES COUNTY, TX - SEPTEMBER 25, 2013: Detail of an entrance to a well site, with a sign warning of H2S, which is Hydrogen Sulfide gas. A wind sock is used to indicate wind direction in case of a poison gas emergency. CREDIT: Lance Rosenfield/Prime
KARNES COUNTY, TX - SEPTEMBER 25, 2013: Detail of an entrance to a well site, with a sign warning of H2S, which is Hydrogen Sulfide gas. A wind sock is used to indicate wind direction in case of a poison gas emergency. CREDIT: Lance Rosenfield/Prime
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2013 Eagle Ford Shale