Helium discovery 'a game changer'

Concerns over dwindling sources of helium - a vital element in cryogenic refrigeration - have been allayed following the discovery of a vast gas field in Tanzania. The discovery could address the increasingly critical shortage of this vital element which is critical in the fields of medicine - particularly in the operation of MRI scanners - welding, industrial leak detection and nuclear energy. It is also used extensively in the Large Hadron Collider.