Liquid assets
Propane company one of few still in family hands, 3 generations later
SEMINOLE — Much has changed since the propane and butane industry sold fuels in storage tanks built by welding shut the ends of a pipe.
"In the early years, propane and butane were just a byproduct,” said Ken Green , the third-generation owner of Seminole-based Oklahoma Liquefied Gas. "They were vented into the atmosphere or burned until somebody figured out it has more value than that.”
Oklahoma Liquefi...
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