Workers measure pipe before cutting and removing the section from the Enbridge pipeline oil spill site near Marshall, Michigan. This photo was taken on August 6th, 2010.
Michigan Radio's Steve Carmody reports "an oil pipeline that broke near Marshall last month is undergoing a critical pressure test today. Enbridge Energy is flooding the pipeline with water to see if it can withstand the pressure."
If it works, and government inspectors say it's o.k., the pipeline will be restarted.
It's been a month since a pipeline leak spewed about a million gallons of crude oil into the Kalamazoo River. Clean-up crews have spent the past four weeks collecting oil from the river and removing contaminated soil.