Granite is mined primarily using drilling and explosives in open-pit quarries.
Here's a more detailed look at the process:
The Quarry Location
Granite deposits are typically found relatively close to the Earth's surface in areas known as quarries. These quarries are carefully selected based on the quality, quantity, and accessibility of the granite.
Extraction Process
-
Drilling: Workers use large drilling machines to create a series of holes in the granite formation. These holes are strategically placed to facilitate the controlled fracturing of the rock.
-
Blasting: Explosives are carefully placed into the drilled holes. The explosives are then detonated in a controlled manner to break large blocks of granite away from the main quarry face. Precise blasting techniques are essential to minimize damage to the granite and ensure the blocks are of usable size.
-
Block Removal: Once the granite has been fractured, heavy machinery, such as cranes and loaders, is used to lift and transport the large blocks of granite.
-
Cutting and Shaping: The extracted blocks are then transported to processing facilities where they are cut and shaped into the desired dimensions for various applications.
This method allows for the extraction of granite in large quantities, which can then be used in construction, monuments, and other applications.