The Corps asked Texas-based Energy Transfer Partners in a news release Wednesday to stop work in the area where protests against the $3.8 billion pipeline have resulted in more than 400 arrests in recent months.
The Associated Press emailed an ETP spokeswoman asking for comment Thursday morning.
The Corps made a similar plea last week but was rebuffed. ETP this week said crews are mobilizing equipment in preparation for tunneling under Lake Oahe.
The 1,200-mile pipeline from North Dakota to Illinois is complete except for under that Missouri River reservoir, which has been delayed while the Corps reviews its permitting.
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