A drilling rig is an integrated system that , such as oil or water wells, or holes for and other construction purposes, into the earth's subsurface. Drilling rigs can be massive structures housing equipment used to drill , , or natural gas extraction wells, or they can be small enough to be moved manually by one person and such are called . Drilling rigs can s.
[pdf] A down-the-hole Drilling Rig (DTH rig) is a powerful piece of mining equipment designed for deep rock penetration by hammering directly at the drill bit location. It’s commonly used in hard rock drilling applications, such as open-pit mines, quarries, and underground development.
[pdf] Many accidents on the drill floorwhile pipe tripping involve using tongs. Injuries result from being caught between tongs and being struck by swinging tongs. All tongs should be securely attached and anchored.
[pdf] 
