Sulphur Springs was owned VentureX Ltd to be developed with Mons Cupri ex- by Straits Resources.
Cu price went down and they got into trouble. VMT SP went down from say 20c to 4c. NST - Northern Star threw them a life line an for a major option.
A lecturer of mine Dr Allan Tench who was a director of Ventures (among others) walked away to Hot Chili saying the CaPex (Capital cost per lb copper was too high for it to be developed in the foreseeable future).
I'll run with that call. Its small enough that the capex /lb Cu produced puts it on the lower end of the food chain. Even though it is in Aust. which reduces sovereign risk.