The properties of helium are unique in that it is the lowest-condensing molecule. This is what we use to cool the magnets in MRIs and NMRs, or nuclear magnetic resonance machines. Of course, we've seen in the press in the last month or two that for the researchers who use NMRs for their research on cancer, etc., it's starting to be apportioned, and they can't complete that work.
It's an inert, pure gas. Because it condenses at the lowest temperature, it's the most pure molecule, at 99.999% purity. This purity is absolutely critical to the environment for making semiconductors. This is one of the large growth areas in the world with semiconductor manufacturing. With the United States reshoring its semiconductor manufacturing, one of the concerns is that it's starting to look inward more for its own supplies, and Canada's supply chain is at risk.
The majority of helium is the helium I was referring to. There is an isotope of a helium called helium-3—