Chambering and block caving are mining methods used in which context?

Chambering and block caving are mining methods used in which context?

• A. Open-pit mining
• B. Alluvial mining
• C. Undersea dredging
• D. Chambering and block caving are methods used in mining diamond pipes

Answer: (D)

Chambering and block caving are bulk underground mining techniques that let rock break and cave under gravity. They’re especially suited to large, vertical ore bodies like diamond pipes (kimberlite pipes). In chambering, initial voids are created to start controlled caving, and then the surrounding rock is allowed to collapse downward so ore can be drawn to the production level with minimal blasting. This approach is cost-effective for deep, heavy bodies where open-pit isn’t feasible. Open-pit mining targets near-surface, wide deposits; alluvial mining recovers diamonds from river gravels rather than solid rock; undersea dredging is for marine deposits. Therefore, these methods are used in mining diamond pipes.

Chambering and block caving are bulk underground mining techniques that let rock break and cave under gravity. They’re especially suited to large, vertical ore bodies like diamond pipes (kimberlite pipes). In chambering, initial voids are created to start controlled caving, and then the surrounding rock is allowed to collapse downward so ore can be drawn to the production level with minimal blasting. This approach is cost-effective for deep, heavy bodies where open-pit isn’t feasible. Open-pit mining targets near-surface, wide deposits; alluvial mining recovers diamonds from river gravels rather than solid rock; undersea dredging is for marine deposits. Therefore, these methods are used in mining diamond pipes.