This pole suffered a failure in the welded seam at an overlapping slip splice. A tubular steel transmission pole generally consists of a series of welded assemblies. The pole shafts and arms are ...

A Pacific Gas and Electric Co. document that the company just disclosed to state regulators indicates the San Bruno pipeline that exploded in 2010 had a history of weld failure that by law should have ...

Federal investigators probing the deadly natural gas pipeline blast in San Bruno are looking into the possibility that a weld along the spine of the pipe failed, but have not yet settled on a definite ...