In search of source for Crook County well pollution, Oregon presses mining company to investigate itself By Emily Cureton Cook (OPB)Aug. 27, 2025 12:13 a.m.Knife River wants state approval for an expansion.📨 Daily news in your inboxSign up today for OPB’s “First Look” – your daily guide to the most important news and culture stories from around the Northwest.EmailPlease leave this field blankSign up