Welding Work Caused Fire At SF America's Cup PierA four-alarm fire that caused $2.4 million in damage to San Francisco’s Pier 29 last month was apparently caused by welders doing work in the building, a fire department spokeswoman said Monday.
Old PG&E Memo Shows Welding On San Bruno Pipeline Had Bad HistoryThe memo found that the pipeline that exploded in 2010 in San Bruno had a history of bad welding.