We're in the process of demonstrating economic viability. The key thing we need to consider when we're reprocessing tailings is that we're not simply going after one or two elements. We have to valorize and extract all the value in those tailings so that we're also solving the environmental liability and looking at the usually large array of minerals in a particular material.
We are working with a techno-economic assessment to show that this is in fact viable and that there has been a lack of imagination in trying to take all of the value out of the materials we've mined in the past.