Va. Code Ann. § 45.2-1103

The operator of a mine may adopt special safety rules for the safety and operation of his mine regarding the work pertaining thereto inside and outside of the mine. Such rules, however, shall not conflict with the provisions of the Act. Such rules, if established, shall be posted at some conspicuous place about the mine where they may be seen by all miners subject to such rules. In lieu of posting the rules, the operator may furnish a printed copy of such rules to each miner subject to such rules.