Ann: December 2017 Quarterly Activities Report, page-41

End of October 95k ounces will have been mined since June 2017 from Smarts. That means 40k ounces are left in Smarts (mostly lower grade crap, 1 g/t?) + 75k in Hicks (1.96 g/t).
115k ounces (combined 1.65 g/t) left.

If the mill extension happens that will last for 2 years, 15k ounces per quarter.

So remaining production is:
1. 55k ounces Smarts 2.4 g/t until October (AISC 900-1000)
2. 9k ounces stockpiles (AISC 470), 3 months
3. 115k ounces Hicks/Smarts Mix 1.65 g/t, AISC will increase by US$100-130 per ounce higher processing costs compared to 1, will last 2 years

Larken + Spearpoint would add another 60k ounces, 1 year, at ca. 800-950 guesstimate if successful.

10 months + 3 months + 24 months = 37 months + maybe 12 additional months.