Richard L. Davis has been assigned as vice president and director of the advanced solid rocket motor project in Thiokol Corp.'s Space Operations.

Replacing Davis as vice president and director of operations is Frank A. Cereska, who will continue to be responsible for the duties in his current position of vice president of production support.Davis joined Thiokol in 1958 at the company's Elkton Division in Maryland. He worked his way through

several positions before being appointed vice president and general manager of the operation. In 1987, he moved to Utah and became vice president of operations.

Cereska joined Thiokol 10 months ago after nearly 21 years with Kimberly-Clark Corp.