RE: Stunning6 Oct 2025 09:22
@ metis20
"However In the process of liquefying Pulsar's He-4, He-3 is also liquefied. Fortunately a liquid mixture of He-3 and He-4 consists of two layers, one of these is almost pure He-3. This He-3 rich layer can be easily and cheaply separated from the He-4 layer. He-3 is therefore an economically obtainable by-product of the process of preparing He-4 for sale."
The boiling point for He-4 is 4.23K or - 268.92 C, while that for He-3 is 3.19K or -269.96, so while you are correct that the He-3 will still be a gas when He-4 is a liquid, I'm not convinced that it will be easy or cheap. Achieving such low temperatures requires at lot of hardware and energy.
And, the concentration is only 1.3 to 14.5 ppb. To give some perspective, and to keep the maths simple, imagine that it's 10 ppb , which is in the range quoted but probably a little optimistic. An Olympic sized swimming pool is 50m long, 25m wide and 2m deep, which is 2500 cubic meters or 2.5 million litres, or 2.5 billion millilitres. A concentration of 10 ppb in an Olympic pool would equal 25 millilitres, which is the same a standard measure of spirts in an English pub - without the mixer or ice.
Imagine one shot of He-3 in pool full of He-4, that's not going to be easy to separate either, even with the 1.04 degree difference in boiling points.
I actually think PLSR is an interesting stock, but IMHO the valve is in the He-4 and the CO2 carrier gas. But I sold out the other day after getting in via the RKH board, so thanks for the lead. I might well buy back in again if the price is right, but as an old experience oil & gas guy, there is still a lot of work to do before we get to He-4 production and much of that work requires significant amounts of capital, which might require a capital raise or two before we get there.
I will now watch from the side lines. GLA
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