This could be excellent speculation, a better one if a few simple questions management could answer.
If they have estimated an August start date, they must have estiated CAPEX and working capital. For example if they have estimated operating costs per ton, then they have estimated labor costs and supplies necessary. One doesn't just flick on a switch- laborneeds to be hired, the mill turned over to work out any problems from being idle for a period of time.Since they have no "official" reserves, there must be estimates of where where material wil lcome from- and what equipment necessary for even low producton levels. What drilling equipment do they need , blasting supplies,hauling equipment etc etc.
It doesnt matter so much the amount of CAPEX but that it can be estimated along with a timetable- otheriwse forecasting gross profit is a bit meaningless if company unable to estimate cash flow.