RE: So interims out the way......30 Sep 2019 09:36
500t is actually 1/20th of 10,000t that should be being produced now.
I believe the 500t is easily sustainable and with a good run 1,200t/month on a single shift or 2,200 on 2 shifts. It would be hard to go much above this, the project doesn't have enough equipment, when the stripping ratio is considered, to mine faster.
Calculation based on
2 trucks, 3 loads a hour, 20t payload = 120t/hr movement
5:1 stripping ratio = 20t coal 100t waste
9 hours running a day (2 shifts are not confirmed), 22 running days a month = 180t/day coal = 3960/month
50% fine rejects and 25% washed rejects. 2000t to wash, 1500t washed coal.
Add in downtime for breakdown/weather/lack of fuel and 1,200t would be a good estimate. If 2 shifts this could increase by 90%