Introduction  ◾Mining is the second industry to develop after civilization invented farming . ◾It has played a key role in development of the early civilization and has been contributing to our Modern world since the early days. ◾ Mining is basically extraction of any naturally occurring mineral substance, whether solid, liquid or gas from the earth for utilitarian purposes.  Terminology  ◾  Mine  - Excavations made in earth for the purpose of extracting minerals. ◾  Mining  - Activity concerned with the extraction of the minerals from earth. ◾  Minerals  - A naturally occurring inorganic element or compound having an orderly internal structure and a characteristic chemical composition crystal form and physical properties.

The dramatic output in the volume of the bulk material during the past few decades has generated an increase need of Heavy Earth Moving Machinery (HEMM) in the field like mining project, Irrigation project ports, big cities etc throughout the world. Heavy Earth Moving Machinery (HEMM) comprise of machines which cut and extract earth, blast rocks, sand and other loose materials and then transfer them to a predetermined position and finally dischange the material on dumping points through dumpers, belt conveyors, etc. Heavy Earth Moving Machinery (HEMM) are the combinations of various mechanisms designed to perform the special type of work as mentioned above. The mechanisms are ▪️A prime mover (diesel engines or electrical motors). ▪️A power transmission system including clutches, gear boxes, chain sprockets, etc. ▪️Control systems, and ▪️Mechanical linkages BUCKET WHEEL EXCAVATOR   Introduction    Bucket wheel excavator is a multi bucket continuous excavator. Contin...