Underground Mining

What it covers

• Decline and drift development
• Underground production drilling
• Controlled blasting in confined ground

Underground work is a repeating cycle — drill the face, charge and fire a round, ventilate and clear the muck, then support the ground before the next advance. Progress is measured round by round, and consistency matters more than any single large shot.

Ground control

Confined ground needs tighter control of each blast. Rounds are smaller, timing is precise, and results are monitored so the surrounding rock stays stable and the opening keeps its designed profile. Perimeter (smooth-wall) blasting limits overbreak and reduces the support the excavation needs afterwards.

Sequencing and safety

Development and production rounds are planned so advance and extraction keep progressing safely, with ventilation and ground support built into the cycle rather than added late. The same discipline of charge-per-delay and monitoring used above ground applies here — see controlled blasting.

Related work

Underground development shares its methods with tunnel construction, and the choice between surface and underground is covered in open-pit vs underground.