John M. Seidl will resign as president...

John M. Seidl will resign as president of Maxxam Inc. and as chairman and chief executive of its subsidiary companies, Kaiser Aluminum Corp. and Kaiser Aluminum & Chemical Corp., and as chairman of Maxxam-owned Pacific Lumber Co.

Seidl, 53, also will resign as a director of Maxxam, the Kaiser companies and Pacific Lumber.

Charles Hurwitz, Maxxam’s chairman and chief executive, will take on the added positions of president of Maxxam and chairman of Pacific Lumber. A.S. Hutchcraft Jr., 62, president of Kaiser Aluminum & Chemical Corp. and Kaiser Aluminum Corp. president, will assume the added positions of chairman and chief executive of both companies.

Seidl did not say what he planned to do after his resignation, but that “1993 is the right year for me to reflect on all those experiences and decide how I wish to spend the next 10 to 15 years of my life.”