Marble quarry operator Colorado Stone Quarries guilty of
Marble quarry operator Colorado Stone Quarries guilty of violating Clean Water Act. 8th April 2020. The Army Corps of Engineers has determined that the operators of a Colorado marble quarry violated the Clean Water Act when they diverted a tributary of the Crystal River to make way for a mining road. In the fall of 2018, Colorado Stone Quarries, which operates Yule Quarry just outside the town of