Harris Associates, a Chicago-based investment adviser, and Tri-Partners said they boosted their stake in Carter Hawley Hale Stores to 7.6% from 5.1% . . . Kerr Glass Manufacturing of Los Angeles said it has completed the purchase of Santa Fe Springs-based SCP Corp., a producer of injection-molded plastic jars and closures, for $9 million . . . Ivanhoe Acquisition Corp. has extended its tender offer for 28 million shares of Newmont Mining Corp. common stock until Oct. 15 as a result of pending litigation in Delaware Chancery Court and in the Ninth Circuit Court of Appeals in San Francisco . . . Aaron Spelling Production announced that it has acquired 150,000 shares of its class A common stock at $9 per share . . . General Motors Corp. intends to copy Japanese methods that increase worker productivity next year in an effort to catch up with competitors like Ford and Toyota, according to a report published in the Detroit News . . . General Tire reported that it will increase prices on its replacement tire lines by 2% to 5%, effective Nov. 2, because of a rise in the cost of raw materials.