_________________ is a rotary drill and it consists of steel pipe stem on the bottom of which is attached to a roller bi…

________________ is used to excavate the trenches of width from 250 mm to 450 mm and depth 4 m with accuracy and speed.

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

__________________ type of scraper consists of a four wheeled scrapper bowl towed behind crawler Power unit.

Due to ___________ the equipment seems physically sound but it becomes old fashioned and the rate of its output becomes …

The trucks with automatic unloading device are called ____________

_________________ are also known as a wood or dowel bit.

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