American Clean Resources Group, Inc. operates as an environmentally sustainable development company in the United States. It engages in the comprehensive resource management and processing of precious minerals and metals. The company leverages existing assets and pursues strategic acquisitions across air, water, and land domains to benefit public and private properties. The company was formerly known as Standard Metals Processing, Inc. and changed its name to American Clean Resources Group, Inc. in June 2022. American Clean Resources Group, Inc. was incorporated in 1985 and is based in Lakewood, Colorado. American Clean Resources Group, Inc. operates as a subsidiary of Granite Peak Resources, LLC.