Excerpts:
Officials have found a 24-inch jagged rupture in a pipeline that began pouring oil and water Nov. 29, creating one of the biggest North Slope crude oil spills ever.
…Officials say massive ice plugs had formed inside the pipe, which caused BP Exploration (Alaska) Inc. to stop operating it a few weeks ago. Pressure then built up until the pipeline ruptured, according to BP.
…DEC officials are compiling information about other large spills but, based on past reports, this one appears to be one of the biggest.