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The amount of crude oil that spewed near Belfield, North Dakota from the ruptured Belle Fourche pipeline in December was vastly underestimated.
The original estimate was around 176,000 gallons of oil. After further review, pipeline operator True Companies now reports about 12,615 barrels (529,830 gallons) of oil spilled, spokeswoman Wendy Owen told Inforum. The cause of the leak has not been determined.