State Of Maine Mining Co is a superfund site located at 1/2 Mi W Of Charleston Rd, Tombstone, AZ 85638. The Environmental Protection Agency (EPA) identifies sites such as State Of Maine Mining Co because they pose or had once posed a potential risk to human health and/or the environment due to contamination by one or more hazardous wastes. State Of Maine Mining Co is currently registered as an Archived superfund site by the EPA and does not require any clean up action or further investigation at this time.