Mining Flashcards
What is mining?
It involves cutting away or extracting rocks that contain a mineral. The rock is crushed and the mineral removed using a chemical process. The tons of rock as well as other waste materials produced in the process have to be removed.
What is the rock containing the mineral called?
Ore
What are 2 ways of mining?
Open pit mining
Shaft and deep level mining
Describe open pit mining
This can only be done when the minerals are close to the surface. It is the simplest type of mining. It is difficult and more expensive to get rocks to the surface as the pit gets deeper.
How deep is the Big Hole of Kimberley?
214m
Describe shaft and deep level mining
The mining companies dig tunnels to where the minerals are when they are deep below the surface.
What are mining tunnels called?
Shafts
How do miners get down mining shafts?
Lifts take them to different mining levels
What are the deepest mines in SA?
Tautona and Savuka, deeper than 4000m
When was the first diamond found in SA?
In 1886
We’re was the first diamond discovered in SA?
On a farm in Kimberley