Grinding tech may lower Elk Creek costs

NioCorp Developments Ltd. says testing has confirmed that high-pressure grinding rolls technology is an energy-efficient and low-emission alternative for reducing the size of ore to recover the niobium, scandium, titanium, and potentially rare earths at its Elk Creek project in Nebraska.

Under the mine plan laid out in a feasibility study, Elk Creek would produce 7,220 metric tons of ferroniobium,...