G1A 0.00% 5.9¢ galena mining limited

Ann: RIU Resurgence Conference Presentation, page-16

  1. 88 Posts.
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    Gweston, underground miners don't see Santa Clause - if you're rostered on you're mining. Mining is 365 days a year 24/7 thing....if you're lucky you might get a 1 hour sleep in or an early knock off.

    To give some more details to my last post (was fairly general)...and remember only going off one slide in the presso.

    1) capital decline development:
    - 200m RL (vertical distance from portal to top of ore body)
    - 200m RL x 7 (decline gradient from portal to top of ore body RL)
    - 1,400m capital decline metres

    2) Capital lateral development:
    - 20m stockpiles are built off the decline every 100m (allows for trucks to be loader) so over 1,400m of declining there will be appox 14 stock piles from the portal to the top of ore body
    - 20m x 14 stock piles
    - 280m stock pile capital lateral development

    3) Drill drives
    - assuming they will want to punch in a drill drive to drill out the copper gold and to turn indicated and measured lead/silver to measured
    - allow for 2 x 150m drill drives
    -300m drill drive (capital)*
    - Note they may use old/unused stock piles as the diamond drill drives (so this 300m might not eventuate)

    4) Return air rises (RAR)
    - they will most likely make this interchangeable with the drill drive (turned into RAR drives once diamond drilling from drill drives are complete) to save on capex
    - Not including any metres here

    5) sumps/sub stations/pump station areas
    - 3 x 7m sumps (for dewatering in levels)
    - 50m for sub station
    - 50m for pump station
    - 125m total for these

    total advance is 2,105m to reach the top of the ore body from the portal (and excludes the 190m that is already mined).

    Adding a little fat onto my previous calcs (1 additional hour to turn a cut over and adding in more lateral development chainage)...also making allowances for intersection cables, some fibrecreted areas for poor ground which can slow the cycle times down (10 hours to turn a 4.5m cut over) you're looking at 468 cuts to get to the top of the ore body...6.5 months.

    IMO we will get to the top by the middle of May as long as its hard rock and no dewatering issues.



 
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