What is the primary reason for using pre-splitting techniques in open-pit mining?

The primary reason for using pre-splitting techniques in open-pit mining is to create a clean, stable, and controlled final pit wall, reducing the risk of slope failure and minimizing damage to the remaining rock mass beyond the designed pit limits. Pre-splitting involves drilling a line of closely spaced holes along the planned pit wall and then detonating a lightly loaded explosive charge in these holes. The controlled explosion creates a continuous fracture or crack along the line of holes, effective....