A worker has died at a coal mine west of Gladstone — the fourth mining fatality in just over six months — prompting the Queensland mining union to declare a "safety crisis".

Key points: It is understood the man was working in the pit when the accident happened

It is understood the man was working in the pit when the accident happened The union says it was not made aware of the accident until eight hours later

The union says it was not made aware of the accident until eight hours later This was the fourth mining death in Queensland in six months, prompting the union to declare a "safety crisis"

Police and emergency services were called to the Baralaba North coal mine in the Bowen Basin just after 2:00am on Sunday.

The ABC understands the 27-year-old man was declared dead at the scene.

But CFMEU Queensland mining and energy president Steve Smyth told the ABC the union only became aware of the incident about eight hours later, via social media.

"[Companies] have a legal obligation to report it," he said.

"But we became aware through a Facebook post and our safety representative then called around … [having] to chase it."

He said the mining industry should be shut down for at least 24 hours "so that some serious reflection can occur".

"It's terrible, we're sick of it … it's a safety crisis," he said.

"We've been saying there needs to be a major safety reset."

It is believed the employee was working in an area of the pit when the accident occurred. ( ABC News: Megan Hendry )

It is believed the employee was working in an area of the pit when the accident occurred, but both the police and ambulance services are refusing to release details about how it happened.

It was the second mining incident in the region in six hours.

A man in his 50s suffered back and spinal injuries in a fall at the Collinsville open-cut coal mine at about 8:00am on Sunday.

Fourth mining death in just over six months

There have been four fatal mining incidents in Queensland in just over six months — six mining and quarry deaths in the past 12 months.

David Routledge was one of six Queensland mine workers who have died in the past year. ( Facebook )

Last month, a Mackay father was killed when a wall collapsed while he was operating a digger at the Middlemount open-cut coal mine, north-west of Rockhampton.

A grader driver died in an underground collision at a Moranbah mine in February, and a fourth worker died in a dozer rollover on New Year's Eve at a mine near Dysart.

In a statement, Mines Minister Anthony Lynham said he was "extremely distressed and concerned" by the number of recent deaths.

"The loss of a life in any workplace at any time is not acceptable," he said.

"Families should be able to expect that when their loved ones depart for work that they return safe.

"I will be following up on discussions held last week by meeting with representatives of the mining industry … as a matter of urgency.

"I will be making it absolutely clear that this situation is unacceptable and requires action."

Mr Lynham said he would make further announcements on what action would be taken by his Government, after he considered the outcomes from the meeting.

Queensland Resources Council chief executive Ian Macfarlane said in a statement the industry was working on measures for a "safety reset" in light of the recent tragedies.

"No death on a mine site is acceptable," he said.

"The resources sector has made constant improvements in its safety record over the last 20 years, but we cannot become complacent."