In reply refer to: P-10-5 through -7 (Urgent)

摘要

The National Transportation Safety Board (NTSB) is an independent federal agency charged by Congress with investigating transportation accidents, determining their probable cause, and making recommendations to prevent similar accidents from occurring. The urgent safety recommendations in this letter are derived from the NTSB's ongoing investigation of the natural gas pipeline rupture and fire that killed eight people in San Bruno, California, on September 9, 2010. The NTSB would appreciate a response from you within 30 days addressing the actions you have taken or intend to take to implement our recommendations.