A ___________ Dredger consists of a pontoon carrying a frame in which a revolving boom is fixed.

_________________ Gantry consists of a platform which receives and distributes the material.

_______________ is a rotary type of drill and its bit consists of a metal mould or Matrix containing a large number of d…

________________ conveyors maybe in the form of side discharge conveyors.

____________________ is a air operated drill similar to Jack hammer.

The ____________ compact soil close to the earth surface only.

____________________ are same as Spur point bits, but can be used in metal, wood and plastics.

Twist bits are also available coated with __________