________________ is an air operated drill which can easily be carried from one place to the other.

In order to raise and shift heavy loads from one place to another, the _____ are employed in the construction of big wor…

______________ are the most common drilling tools used by the handyman with either hand or electric drill.

__________________ ropes consists of strands of wire of iron, Steel, etc. which are twisted around the core of hemp.

____________________ laser drilling is a method used to remove a cylindrical Core, or circular disc from a substrate.

In _________ the bits for Jack hammer and drifters are forged on one end of the drill Steel.

A ___________ Dredger essentially consist of sand pump which excavates and transport the bed material in one operation.

A __________ is a power driven hammer used to shape forgings.