RMI & Associates has named David B. Michels president and chief operating officer of the Columbia food wholesaler. Michels spent 34 years with McCormick & Co., eventually rising to the position of vice president and general manager of the grocery products division in Baltimore. Until his recent appointment, he was a partner in the food industry consulting firm of Adamy, Foley, Wilcox.

Hessick Inc., a Washington heating equipment and fuel supply company, has elected George S. MacDonald to senior vice president. MacDonald will have responsibility for all fuel oil delivery operations, including two local subsidiaries, Vienna Fuel, in Vienna, and Community-Blankenship Oil, in Leesburg.

Trak Auto Corp. has appointed Mike Lewis vice president of operations for the Landover automotive parts retailer. Lewis was formerly with Montgomery Ward as a manager of its Hyattsville store and as a member of its corporate planning team in Chicago.

Richmond-based Richfood Inc. has promoted Martha B. Ward to systems and audit manager and Thomas J. Martin to budget manager. Ward was previously a senior auditor, while Martin was a staff accountant.

The Zamoiski Co., a Baltimore home appliances and electronics wholesaler, has named Ann Jones vice president and director of operations. Jones was previously vice president in charge of planning and facility development at Johns Hopkins Hospital.