Scandium is mentioned as one of the "rare" earth elements readily recovered from coal. I can't speak for the viability of this process, but cheap scandium woul

Scandium is mentioned as one of the "rare" earth elements readily recovered from coal. I can't speak for the viability of this process, but cheap scandium would be a great outcome. Small amounts of Scandium greatly improves the tensile strength, fatigue behavior and other properties of Aluminum.