The term _________ is used to indicate the period during which the equipment is in ideal condition.

A Grader which is told by a tractor is known as _____

_______________ is a Rotary type drill and its abrasive power depends on the bit which is in the form of a section of st…

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

A _____________ is a mechanism in the shape of a cylinder or drum, over which rope or chain is wound.

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

_____________________ bits are used when some rocks are so abrasive that steel bits have to be replaced after they have …

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