72 hours. According to the query of China Mining Network, the safety training time of employees in coal mining enterprises should meet the following requirements:

1. The initial training time for the safety qualification of the main person in charge and the safety production management personnel shall not be less than 48 hours, and the annual retraining time shall not be less than 16 hours.

2, coal mine manager qualification and the main person in charge of safety qualification training, the initial training time shall not be less than 64 hours, the annual retraining time shall not be less than 24 hours.

3, engaged in coal mining, tunneling, mechanical and electrical, transportation, ventilation, geological survey and other work team leaders, as well as other employees newly recruited into the mine, the initial safety training time shall not be less than 72 hours, and the annual retraining time shall not be less than 20 hours.