Metal Mining - Study Mode

Explanation

Solution: Option A: Under hand method This option suggests that cut and fill stoping follows the underhand method. This statement is incorrect. The underhand method involves mining downward, which is not typically associated with the cut and fill stoping method. Option B: Over hand method This option suggests that cut and fill stoping follows the overhand method. This statement is correct. The overhand method involves mining upward, which is consistent with the cut and fill stoping technique where material is mined in horizontal slices starting from the bottom and moving upwards. Option C: Both A and B This option suggests that cut and fill stoping follows both the underhand and overhand methods. This statement is partially correct. While cut and fill stoping is predominantly associated with the overhand method, there are situations where it can be adapted to an underhand approach, although this is less common. Option D: Nil This option suggests that cut and fill stoping does not follow either the underhand or overhand methods. This statement is incorrect, as cut and fill stoping is a recognized mining method that primarily follows the overhand method. Conclusion: The correct answer is Option B: Over hand method because cut and fill stoping predominantly follows the overhand method, where mining progresses upwards in horizontal slices, making it the most suitable and commonly used method for this technique.