CLEVELAND (June 5)—Geon Co. and M.H. Hanna Co. have assigned a new senior management team to head the $3.5 million polymer services firm to be formed by their impending merger. Reporting to recently announced new Chairman and CEO Phillip D. Ashkettle will be: Thomas A. Waltermire, president and chief operating officer; Peter B. Eckle and Donald J. Knechtges, overseeing acquisitions and new ventures; Dennis A. Cocco, overseeing communications and public affairs; Gregory L. Rutman, corporate secretary and general counsel; and Glenn E. Higby, overseeing safety, health and environmental protection. Appointments are effective upon the close of the planned consolidation, expected by August, M.H. Hanna said.