425K views · 2.8K reactions | A blasting in tunnel. Drill and blast...

The drill and blast method is a widely employed technique in mining operations, particularly in hard rock mining. This process involves two key components: drilling holes into the rock formation and subsequently blasting the rock to facilitate its fragmentation. Drill patterns are meticulously designed to optimise the blasting process, considering factors like rock type, size, and desired fragmentation. The drilling phase utilises specialised equipment to bore holes into the rock, where explosiv

*MILESTONE* – BHP Mitsubishi Alliance’s (BMA) Caval Ridge Mine in the Bowen Basin now holds the title of the world’s largest electronic blast completed using Dyno Nobel DigiShot technology. – The blast involved: ☑️ 4.7 million cubic meters of overburden shifted ☑️ Fired with 2,194 tonnes of bulk explosives ☑️ Across 3,899 holes. ☑️ Loaded over 14 days ☑️ Using 8,144 detonators ☑️ It involved a combination of four related blast patterns – “Timings for the detonators are fully programmable and eac