Master Drilling has been awarded the contract for the construction of two ventilation shafts, each 6.1 m in diameter and a record-breaking 1.2 km deep, for refined-copper producer Palabora Mining ...

Shaft mining is a method of excavation that accesses an ore deposit from the top down. The term "shaft" refers to the ...

Historically, the type of mining method has been determined by what the orebody could support economically. If an open-cast pit mine could access an orebody, ... For example, in shaft sinking, ...

The Mngeni shaft will exploit a high-seam resource of between 2.3 m and 2.6 m, thereby making mining easier. ZAC also mines its low-seam Outcrop shaft, where the mining method is more challenging ...

But open-pit mining is much cheaper than shaft mining and—more important to smart President Stanley and International’s 90,000 stockholders—combination of the two methods will assure an ...

Redundant mine shafts are becoming a growing risk for mining companies, ... “There are different shaft-sealing methods available depending on the specific substructure layout of the mine.

BRITISH miner Kavango Resources Plc is set to pioneer Zimbabwe’s first spiral decline method for hard-rock underground mining as part of its ambitious 2025 plans, businessdigest heard this week.

BRITISH miner Kavango Resources Plc is set to pioneer Zimbabwe’s first spiral decline method for hard-rock underground mining as part of its ambitious 2025 plans, businessdigest heard this week.