Members of the Arizona Branch of the U.S. Army Corps of Engineers Los Angeles District Regulatory Division make a compliance visit to Ray Mine, an existing open pit copper mine in Pinal County, Arizona, March 29.
Sallie Diebolt, Arizona Regulatory Branch chief, and Mike Langley, a senior regulatory project manager, led the team on a tour of Big Box Dam and a current mitigation site along Mineral Creek and Devils Canyon at the mine complex. Original public domain image from Flickr