On the 28th, the roof of the Anyang Agricultural and Marine Products Wholesale Market in Dongan-gu, Anyang-si, Gyeonggi Province, collapsed due to two consecutive days of heavy snowfall. A woman ...
That’s relevant for digging through the Earth, because when a hole is dug or drilled, the walls along the sides of the hole are under tremendous pressure from the overlying rock, and also unstable ...