Failed Chevron refinery pipe's walls were dangerously thin; thin as penny

Failed Chevron refinery pipe's walls were dangerously thin, investigators tell ...
San Jose Mercury News
RICHMOND -- Portions of the 8-inch carbon steel pipe whose failure triggered last month's major fire at the Chevron refinery had thinned to about the thickness of a penny before leaking 600-degree diesel oil, federal investigators told the City Council ...

Board: Chevron failed to check bad pipe San Francisco Chronicle
Feds: Pipe wall in refinery fire was thin as penny