The cause of the explosion, which took place 11:30 p.m. CDT Monday, was not immediately determined, and fire crews were waiting until daylight to investigate and repair the line, WHBF-TV, Moline, reported.
A spokesperson for Enterprise Productions said there are thousands of miles of gas lines -- of propane and ethanol mix -- in the area.
Thirty-seven people living within a mile of the explosion were evacuated. All but the people living in two homes were allowed back to their residences as of 4 a.m, WHBF said.
Witnesses told the broadcaster flames from the explosion could be seen from miles away.
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