Despite Mr. Karawan's vote of confidence for the safety of the MIC operations at his plant, Union Carbide elected to shut down production of the deadly chemical until it could make $500 million worth of safety improvements. On May 4, 1985, Union Carbide resumed production of MIC. On August 11, 1985, on the heels of the completion of the safety improvement program just a few months before, 500 gallons of aldicarb oxime and highly toxic MIC leaked from the Institute plant. Although no one was killed, 134 people living around the plant were treated at local hospitals.