Montana Code > Title 15 > Chapter 23 > Part 8 > § 15-23-807 Montana Code 15-23-807. Assessment procedures Current as of: 2023 | Check for updates | Other versions 15-23-807. Assessment procedures. The gross proceeds of metal mines shall be assessed under the provisions of 15-23-101 through 15-23-107. Ask a legal question, get an answer ASAP!Click here to chat with a lawyer about your rights. Previous Next Part 8 Contents Ask a question, get an answer ASAP!