Anyone who has experienced coal for a long time can distinguish the color from the soil surface and then dig deep into the five-foot Xu Fang to get the coal. When the coal front is first seen, the poison gas is burning. There is a giant bamboo chiseled to the middle section, sharp and sharp,

Inserted into the charcoal, the toxic fumes are transmitted from the bamboo. The person from the bottom of the shovel picks up the shovel. Or the well is down, the charcoal is wide and wide, and it is widened with the left and right sides. The upper support plate prevents the pressure from collapsing.