RE:17 gpt Production needs more drillingevery year their very high grade p&p is a small number of oz. that doesn't mean anything as they mine inferred and indicated too, and drill more high grade every year. ore from artisinal miners are not included in resources.
their 2018 drill results show many over 10g/t
https://stockhouse.com/news/press-releases/2019/02/25/gran-colombia-gold-identifies-new-zones-in-its-final-2018-drilling-results-for
https://stockhouse.com/news/press-releases/2018/10/03/gran-colombia-gold-identifies-a-new-structure-at-its-sandra-k-mine-announces
https://stockhouse.com/news/press-releases/2018/06/18/gran-colombia-gold-identifies-a-new-structure-at-its-el-silencio-mine-announces
sandra k and el silencio resources are recorded at a low 10g/t, but they identified new structures in both with very high grade like 84.14 g/t Au with 94.1 g/t Ag
the hundred plus channel samples of veins with greater than 30g/t at el silencio may not show up in resource estimates but it does mean a lot in practice when they mine it. at the very least, that means those very high grade veins have not suddenly gone dry after 150 years as the shorts want you to believe.
their costs do not stay the same every year. their infrastructure upgrades like build tailings storage, water treatment, ventilation shaft only need to be done once, not every year. those modernization costs should drop once they are done. plus drop in corp tax increases free cashflow.