JUNEAU, Alaska (AP) — The U.S. Environmental Protection Agency is extending until Dec. 2 the timeline to decide whether to proceed with proposed restrictions that would block plans for a copper and gold mine in Alaska’s Bristol Bay region.

The agency, in a recent notice, said this would “help ensure full consideration of the extensive administrative record, including all public comments.” The public comment period ended Tuesday. EPA rules call for a decision on next steps within 30 days after public hearings though not before the end of a comment period, the notice said. Hearings we...