For rock drills: <br>1. Drilling surface area of the machine. <br>2. Whether the material you need to mine is above-ground or underground ore. <br>3. The depth and diameter of the rock drill.
For rock drills:<br>1, machine working drill surface area.<br>2. Whether the material you need to mine is above ground ore or underground ore.<br>3, the depth and diameter of the rock drill.
For rock drill:<br>1. Drilling surface area of the machine.<br>2. Is the material you need to mine above ground ore or underground ore.<br>3. Depth and diameter of rock drill.<br>