David J. Cornelsen has been promoted to manager, technical operations, for the Well Control Systems organization of National Supply Company, announced George E. Gray, general manager. Mr. Cornelsen will be responsible for all quality assurance, product design, and development of new products.

Mr. Gray, commenting on the creation of this new position, stated that "this move was necessary to maintain a strong emphasis on quality while the company continues to develop and expand its product line." He said that "current plans call for the company to continue increasing its manufacturing capacity as rapidly as possible in an effort to meet increasing demand."

Mr. Cornelsen was first employed by National Supply Company in 1955 as design engineer. He advanced through several supervisory engineering positions before becoming chief product engineer for Well Control Systems in 1973.