CODE OF VIRGINIA SECURING CARS (§ 45.1-161.144) A. Standing cars on any track, unless held effectively by brakes, shall be properly blocked or spragged. B. Positive-acting stopblocks or derails shall be used where necessary to protect miners from danger of runaway rail equipment. Derails shall be located where grades at the entrance and other locations in the mine create potential collision hazards. C. Safety chains, steel ropes, or other effective devices capable of holding the load shall be used to prevent runaway man-trip or other supply cars. HISTORY: Code 1950, § 45-69.1; 1954, c. 191; 1966, c. 594, § 45.1-73; 1979, c. 315; 1983, c. 70; 1985, c. 302; 1994, c. 28; 1996, c. 774; 1999, c. 256.