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William Jenkins

company executive

William Jenkins, American building materials and property development company executive.


Jenkins, William was born on February 15, 1920 in Mystic, Iowa, United States. Son of William and Agnes (Gallager) Jenkins.


Bachelor, Drake University, 1941.


Accountant General Motors Corporation, Kansas City, Kansas, 1941-1942, Menasco Manufacturing Company, Los Angeles, 1946-1947. President, chief executive officer Conrock Company, 1947-1984. Chairman board, chief executive officer CalMat Company (merger Conrock Company and California Portland Cement), 1984-1988, chairman board, from 1988.

Board directors CalMat Properties Company, Los Angeles, CalMat of Arizona, Phoenix, CalMat of Center California, Allied Concrete and Materials Company, California Portland Cement Company.


  • Avocation: golf.


Trustee United for California, Costa Mesa. Lieutenant United States Navy, 1942-1946. Member California Manufacturers Association (board directors, chairman 1980-1981), Southern California Ready Mixed Concrete Association (board directors, past president), Portland Cement Association (director, president, Chairman.1985-1988), National Sand and Gravel Association (director, chairman board directors 1982-1983), California Club, Jonathan Club, Hacienda Golf Club, Beavers (board directors).


  • Other Interests

    Avocation: golf.


Married Barbara Jane Crafts, June 4, 1944. Children– Kathryn Ann, Thomas William.