Cabot Corp., Billerica, MA, has appointed E.T. Horn Co., La Mirada, CA, West Coast distributor for CAB-O-Sil fumed silica and specialty grades of carbon black, effective Jan. 1. The distribution territory includes Alaska, Arizona, California, Hawaii, Idaho, Montana, Nevada, Oregon, Utah, and Washington. E.T. Horn operates warehouse locations at La Mirada and Oakland, CA; Portland, OR; Seattle; and Salt Lake City.