General Aluminum Manufacturing, a division of Park Ohio Holding Co. that produces a variety of automotive components at six plants, will idle its Richmond, IN, plant in early March. According to General Aluminum Manufacturing, the length of the closing is not known, and it cites weak demand for automotive parts is cited for the decision. At its various plants General Aluminum performs sand and permanent mold casting, as well as lost-foam and diecasting, and it machines finished parts. Its product line includes components for automotive drivetrain and transmission parts; brake system components; housings and covers for fuel pumps and transmissions; support and mounting brackets; suspension components; and oil filter adapters. A notice of the closing has been filed with Indiana regulators. The plant has 84 workers represented by the United Automobile, Aerospace & Agricultural Implement Workers of America.