Bruce W. Woolpert, the president of Graniterock Co. for the past 25 years, died in an accident while boating in Lake Tahoe, company officials said.
Woolpert, 61, had dropped off his son at a North Shore dock about 2:30 p.m. and was in the process of tying up his power boat at a buoy and getting into a 9-ft. dinghy when he apparently fell and drowned, said Sgt. Dave Hunt of the Placer County Sheriff's Office.
Woolpert was the grandson of Arthur Roberts Wilson, who founded the family-owned company in 1900. The Watsonville-based company is now called Graniterock.
Community leaders called his loss a blow to the construction materials industry and to the community as Woolpert was a loyal supporter of students and area charities, according to the Mercury News.