The Sulphur Mines salt dome, where extraction of oil, gas, brine or sulphur has gone on since the late 1860s, has five caverns within the proposed 300-foot minimum. Some homes dot the area south of ...

BATON ROUGE, La. (AP) — Studies of the area where a sinkhole formed last summer in Assumption Parish indicate scientists suspected as early as 1991 that the Napoleonville Dome was not shaped as state ...