A blowout occurred approximately 5:30 am on Wednesday March 23, 2000 on Marine Drilling's jackup, Marine 4. The Marine 4 was working for Forcenergy, Inc. on West Cameron block 317 when the incident occurred. The personnel on board the rig have all been safely evacuated. The blowout occurred while setting casing on a natural gas well and no ignition of escaping gas has been reported. The Minerals Management Services and the U.S. Coast Guard have been notified and well control specialists have been dispatched.