250 workers deployed to the Keystone pipeline spill in Kansas, but the cleanup's end isn't in...

The workers are on site in Washington County to survey and clean the Keystone pipeline oil spill that moved about three miles downstream in Mill Creek.
The largest inland oil spill in nearly a decade has prompted the owner of the Keystone pipeline to build an earthen dam three miles downstream from the release in an attempt to limit the contamination in north-central Kansas.

Canadian company TC Energy also said it’s deployed some 250 workers to limit the damage from the pipeline’s rupture last week and the release of 14,000 barrels worth of crude — enough sludge to fill an Olympic-sized swimming pool.

Meantime, federal regulators said it appears the oil has not fouled groundwater.

TC Energy says it’s unclear how long it will take to clean up the damage and remediate the soil in Washington County, just south of the Nebraska border.