Bench height would be designed considering terrain condition, Geological setup of the area. For i,e Coal mines in Indian context , 6 m height and 10m width which we normally follow here.
Thanks
S.Chandrabose
it is open not underground (it has no roof)
Uranium mining can be either by open pit mining or by underground mining.
The three types of mining -strip mining,open pit mining,and shaft mining
open cast mining is...
Open cast mining and Underground mining.
Open cast mining and Underground mining.
Open cut mining
The two types of mining are Open-cast mining and Underground mining. Underground mining is further divided in to Adit mining and Shaft mining.
Strip mining, Open pit mining and Mountaintop removal mining
The three types of mining -strip mining,open pit mining,and shaft mining
The three types of mining -strip mining,open pit mining,and shaft mining
Strip Mining.