____________________ is a air operated drill similar to Jack hammer.

In ____________ drilling pattern, the drill holes are arranged nearly parallel in horizontal plane with a slight inclina…

___________________ equipment are used to decrease the porosity of earth and to increase the density and strength of the…

________________ are usually mounted on two or four pneumatic tyred wheels.

A _____________ is a mechanism in the shape of a cylinder or drum, over which rope or chain is wound.

In a Trencher, a series of small cutting ________ attached to two endless chains which are supported by a boom.

________________ crane is used for open sites and it possesses a very long reach.

________________ are Steel bits which are screwed to the ends of drill rods and they can be attached to or removed from …