Method of cultivation of coal and lignite infields formed by uncovering (open cast mining)
A Standard patent application filed on 03 June 1994 credited to Valkanas, George N
Details
Application number :
68051
Application type :
Standard
Application status :
CEASED
Under opposition :
No
Proceeding type :
Invention title :
Method of cultivation of coal and lignite infields formed by uncovering (open cast mining)