FOOTHILLS TO CONFIRM CAUSE OF LINE BREAK

Foothills Pipe Lines Ltd., Calgary, was scheduled last week to reduce pressure in its gas pipeline system to excavate pipe at the site of line rupture in Saskatchewan. The aim is to check for further evidence of the cause of the rupture, currently blamed on a rare occurrence of hydrogen induced cracking. The unusual chemical reaction caused a major rupture and fire last February that temporarily disrupted natural gas exports to the U.S. through part of Foothills' Canadian "prebuild"

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