Okay, thanks, Ben. Yeah. So at this stage, we're at the, I would say early feasibility stage moving into the design phase to get to a final, let's call it a bankable feasibility to do all this. So the numbers are pretty preliminary. What we've looked at so far, though, has been for purified phosphoric acid and potentially building a powder plant, which would be the precursor to a lithium iron phosphate cathode. So at this stage, we're probably looking at 100,000 tonnes of purified phosphoric acid at our Louisiana facility. And our expectation of cost is probably in the range of $0.5 billion to build that. Now, obviously, we have to look at the long term demand profile and what we can expect for pricing. But what we've seen so far is first phase has got a strong, higher than well over a cost of capital return. And then if we go future phases, obviously the capital per ton decreases, and that return gets better as we go forward. But we're going to do it in a modular way, by doing it in a modular way, we will reduce the long term risk, market risk, et cetera, et cetera. And what we're seeing, though, from a qualitative perspective, is due to the expense of nickel, cobalt, et cetera, there is a strong trend towards lithium iron phosphate batteries, not only for electric vehicles, but also for stationary power. And particularly, our view is that, while electric vehicles will be the early growth engine, long term, you will need these stationary batteries to make up for the variability of both solar and wind. They don't tend to come at exactly the same time as demand. So you have to have some level of buffering.