NTSB Says Corrosion Found on Marshall, Michigan Ruptured Pipe

Close-up view of the section of pipe containing rupture

In testimony to a U.S. House of Representatives committee today, National Transportation Safety Board Chairman Deborah A.P. Hersman provided an update on the progress of the NTSB's investigation into an oil spill in Marshall, Michigan in July. Investigators found corrosion on the exterior surface of the accident pipe piece and the second pipe piece, and found surface cracks and indications of corrosion on the ruptured pipe. Government investigators estimate that between 800,000 and 1 million gallons of oil spilled as a result of the Marshall pipeline rupture.

For the full trascript of Ms. Hersman's testimony, see here.

For more information on the pipeline incident, see here.