Union Carbide will resume production of aldicarb.

The company said it plans to resume production of aldicarb at its Institute, W.Va., unit in late December or early January to meet demands for agricultural chemicals during the next growing season, company officials said. The firm’s aldicarb unit was shut down Aug. 11 when a mixture of aldicarb oxime and methylene chloride leaked from a storage vessel, sending 135 people to area hospitals.