Section 45.2-853 - Checking system; tracking systemA. Each mine shall have a personnel checking system that includes the following requirements: 1. Every person underground shall have on his person a means of positive identification bearing a number recorded by the operator; and2. An accurate record of the persons in the mine shall be kept on the surface in a place that will not be affected by an explosion. Such record shall consist of a written record, check board, lamp check, or time-clock record and shall bear a number identical to that carried by the person underground.B. Any mine-wide tracking system shall be maintained in usable and operative condition.Code 1950, § 45-70; 1954, c. 191; 1966, c. 594, § 45.1-97; 1994, c. 28, § 45.1-161.174; 2015, cc. 103, 397; 2021, Sp. Sess. I, c. 387.