Resource explorer Renergen, whose shares have more than doubled so far in 2021, has signed its first direct helium supply deal, allowing it to diversify its customer base from just wholesalers.

Helium is important for the medical industry and is used for cooling in magnetic resonance imaging (MRI) machines. It is also needed for the manufacture of fibreoptic cables, cooling during the production of nuclear power and the propulsion of rockets into space. It is a key input for the defence industry, and for balloons...

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