The stope mining methods proposed in this PEA for the Clavos JV project are cut & fill stoping and bulk long hole stoping with pillars for the most part located in waste material. These stoping methods are common in mining, and are considered to be inherently safe methods of mineralized material extraction.
Cut & Fill Stoping:
- Selected as being safe while allowing a high percentage of mineralized material extraction with selective extraction methods possible
- Highly flexible permitting selective mining to be performed through alternate production faces within a single mining area
- Most efficient should the mineralized material grade or configuration of the mineralized structure be variable
- With two or more cut & fill stoping complexes in close proximity with each other, the same stope mining gear can be employed by traversing a connecting sub drift
- Could utilize steel mill holes and galvanized man ways in conjunction with cemented fill floors
- Could make use of hand held pneumatic drilling machines
- Mucking could utilize 1.25 mechanically driven diesel scoop trams and/or Cavo type muckers.
Bulk Long Hole Stoping:
- Allows utilization of similar equipment throughout the mine workings
- Incorporates longitudinal retreat stoping methods
- Utilizes 2 ½” to 3” diameter holes drilled from a pneumatic drill wagon
- Utilizes 3.5 yd. ........
