Boulby is the world's first polyhalite mine. Woodsmith is hoping to be the second. A naturally occurring mineral which is sold as a super fertiliser, I used a debate in Westminster to ask if projects working with polyhalite will be eligible for support moving forward. The UK Critical Minerals Strategy, launched earlier this month, is a long-term vision designed to ensure this country has the critical mineral resources required to drive economic growth and the transition to clean energy. Followin