To see a good comprehensive feasibility or scoping study go to Capricorn Metals and search for the announcement in 2017
It is some time ago and is gold, but it shows what you should be looking for when assessing any sort of project.
On comparison I think the Karlawinda study shows Woodlawn still has some catching up to do. Most importantly they need to lift the resource life from 7 years to around 10 or more years before this can be a real buy at this price. Same case for Sulphur Springs as well which is around 8 years. But bear in mind Karlawinda is open pit while woodlawn is underground so can't really do a real comparison.
The big advantage is all the infrastructure and preproduction work has been done which takes out some of the risk.
I admit when I first bought in the Venturex Resource days, I didn't know much about Sulphur Springs other than the CAPEX was much lower than Khoemacau and the fact that Northern Star and Precision Opportunities Fund were both major shareholders. I thought initially Sulphur Spring would be easy to get approved and maybe Northern Star would do some sort of takeover and become like BHP or OZL given they loaned all that money. Only when I did more digging I realised my mistake that Sulphur Springs was a mediocre project compared to Khoemacau and hence why it sat dormant for so long.