Two people are dead, and another is in hospital, after an underground mine explosion in far west NSW.

Emergency services were called to the incident at Cobar, some 450km east of Broken Hill, at about 3.45am on Tuesday 28 October.

Police were immediately told one man had been confirmed dead after the underground explosion.

Two women were then brought to the surface, but one of them passed away shortly after.

The second female was airlifted to hospital suffering hearing damage and shock.

At about 7.15am, police confirmed the deaths and said emergency services remained at the scene.

SafeWork NSW will lead an investigation into the incident, with police to also prepare a report for the Coroner.

Copper and gold mining are the two leading employment industries in the region.

The mine is

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