In __________ type of drill, the grinding of rock into small particles is carried out through the Abrasive effect of a b…

_______________ are the most commonly used equipment for transportation.

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

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

A ___________ Dredger consists of an endless chain of bucket mounted on a ladder.

_________________ bits are specially used for very hard materials.

________________ based lubricants do not work well on diamond drill bits.

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