Cleanup efforts mark milestone in Colorado; Bulkheads installed in abandoned mine in Summit County

摘要

COLORADO DIVISION of Reclamation,Mining and Safety workers finished installing one of two bulkheads in the abandoned Pennsylvania Mine in Summit County, CO. The installation of the bulkheads are part of a massive plan in the county to clean up mines that have been seeping contaminated water for years. The Summit Daily reported that the bulkhead was installed about 152 m (500 ft) inside the mine.