First, yes, it is a critical mineral. Scandium is a rare earth—one of the 22 rare earth elements. The reason we were looking into it is that we were going through a sort of creative process to see what else we could do to beat the critical minerals challenge.
There are two big applications for scandium in the world. One of the largest is for fuel cells. It's an alloying element for the main ceramic used as a solid oxide electrolyte in fuel cells. This is all part of the green economy. That is the biggest use at the moment.
The second is in aluminum. The key with aluminum is that it helps to lighten structures so that less energy is required to move those structures, such as cars. The issue was that scandium was very expensive and there wasn't stability of supply. Many people wouldn't get into the manufacture of aluminum-scandium alloys because there was uncertainty about the long-term stability of supply, which is particularly important if you are a car company or are dealing with something in defence.
What we do is bring stability of supply now.