In a shaft accident most often, in fall of equipment or surplus delivery and delivery time(If bundled especially long length of tube and pipe materials for promotion, slinging out with often).
The most common accident in the pit is due to fall at the time of loading and unloading of equipment and waste soil in the case of a bundle (especially single tube or long object of propulsion for the piping material, to be due to omission of slinging many).
The most common accident in shaft equipment of , and load / unload time due to fallEspecially in the case of a bundle of long products promotion for pipe and tube due to a lot of , slinging