PIPELINE ACCIDENT REPORT. NORTHERN STATES POWER COMPANY LAKE CITY, MINNESOTA. OCTOBER 30, 1972

The report describes the pipeline accident in which a bulldozer struck and snapped a gas-service line. A department store located near the rupture, but not served by gas, blew up and later caught fire. Six persons died as a result of the explosion and 10 more were injured. The National Transportation Safety Board determines that the probable cause of the explosion and fire in the department store basement was the ignition of an accumulation of natural gas leaking from the unmarked service line which had been struck by the bulldozer.

• Corporate Authors:

  National Transportation Safety Board

  490 L'Enfant Plaza, SW
  Washington, DC  United States  20594
• Publication Date: 1973-5-16

Media Info

• Pagination: 23 p.

Subject/Index Terms

• TRT Terms: Building; Crash investigation; Crashes; Explosions; Fatalities; Fires; Gas pipelines; Leakage; Natural gas; Natural gas distribution systems; Natural gas pipelines; Pipeline safety; Pipeline transportation; Tearing
• Identifier Terms: U.S. National Transportation Safety Board
• Old TRIS Terms: Gas mains; Gas pipes; Leaking gas; Ntsb
• Subject Areas: Construction; Pipelines; Safety and Human Factors;

Filing Info

• Accession Number: 00047859
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NTSB-PAR-73-1 Acc Rpt
• Files: NTIS
• Created Date: Oct 18 1973 12:00AM