__________________ type of excavator is used for digging at or below the operating level.

Effective compaction is not achieved by ________ rollers.

In __________ the owner has to invest a certain amount for the purchase of an equipment.

In _______________ type of gantries, derricks are built on specially constructed tower at site of work.

__________________ laser drilling uses a rapid fire burst of pulses micro-machining method.

____________________ is a air operated drill similar to Jack hammer.

_______________ consists of a large bucket which is attached to a tractor.

In __________ drilling pattern, the drill holes slope both in the horizontal and vertical planes.