.....or the imminent pouring/move to production was already...

.....or the imminent pouring/move to production was already factored in the sp.
Now they just need to reach nameplate throughput without any major disruption (ie breakdowns, power issues, weather events etc) and achieve a steady production output/profile. As this is achieved confidence will increase and the sp will reflect this.

If wanting more excitement go chase day trade stocks. This should be a methodical, planned progression of value increasing with the occasional bump from more drilling and further resource definition.