30 CFR § 46.8
Annual refresher training.
(a) You must provide each miner with no less than 8 hours of annual refresher training—
(1) No later than 12 months after the miner begins work at the mine, or no later than March 30, 2001, whichever is later; and
(b) The refresher training must include instruction on changes at the mine that could adversely affect the miner's health or safety.
(2) Thereafter, no later than 12 months after the previous annual refresher training was completed.
(c) Refresher training must also address other health and safety subjects that are relevant to mining operations at the mine.
Recommended subjects include, but are not limited to: applicable health and safety requirements, including mandatory health and safety standards; information about the physical and health
hazards of chemicals in the miner's work area, the protective measures
a miner can take against these hazards, and the contents of the mine's
HazCom program; transportation controls and communication systems; escape and emergency evacuation plans, firewarning and firefighting; ground conditions and control; traffic patterns and control; working in areas of highwalls; water hazards, pits, and spoil banks; illumination and night work; first aid; electrical hazards; prevention of accidents; health; explosives; and respiratory devices. Training is also recommended on the hazards associated with the equipment that has accounted for the most fatalities and serious injuries at the mines covered by this rule, including: mobile equipment (haulage and service trucks, front-end loaders and tractors); conveyor systems; cranes; crushers; excavators; and dredges. Other recommended subjects include: maintenance and repair (use of hand tools and welding equipment); material handling; fall prevention and protection; and working around moving objects (machine guarding).