C332 Conspiracy

Of course, no matter how far the mine light went, it was useless. The ground was still covered in black paint, making it seem extremely depressing. However, the miners had to work here for at least eight hours a day to pull out baskets of coal.

Shi Jiangyuan checked the safety indicators such as the support of the mine tunnel, the concentration of gas, and so on. Every ten days for half a month