Forum: Non-WRX Discussion
14-04-2011, 06:20 PM
|
|
Replies: 7
Views: 1,319
I'm no ecologist or mining engineer, so my...
I'm no ecologist or mining engineer, so my knowledge is limited, but isn't the overburden ratio just the amount of overburden that must be removed to excavate a quantity of coal?
As a cubic m/tonne...
|
