Mining Within a Weak Rock Mass
ABSTRACT. ABSTRACT: Kencana Underground Mine is located on the remote island of Halmahera, Indonesia in a seismically active region. Kencana uses mechanized underhand cut and fill mining to produce approximately 300 ktpa of ore at a grade of 39 gram/tonne gold. Underground development commenced in July 2005and over 2 km of 6m x …
