RE: RNS12 May 2021 09:50
Bamps .. I agree roughly a year to get sample ore. Re ventilation shafts, with modern methods May be quicker and cheaper .. .
Blind shaft drilling offers certain advantages over conventional shaft sinking techniques. The process is highly automated. Using only a three-or four-man crew, all of the work is performed on the surface. No one enters the shaft during development. Similarly, SDI does not need access to the headings underground. Depending on the geological conditions encountered, the drilling process normally advances at much quicker rates than a conventional shaft sinking operation.
Blind shaft drilling offers certain advantages over conventional shaft sinking techniques. The process is highly automated. Using only a three-or four-man crew, all of the work is performed on the surface. No one enters the shaft during development. Similarly, SDI does not need access to the headings underground. Depending on the geological conditions encountered, the drilling process normally advances at much quicker rates than a conventional shaft sinking operation.