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Three die in Utah rescue attempt Three die in Utah rescue attempt
(30 minutes later)
Three rescuers have died and six more have been injured during efforts to reach a group of coal miners trapped underground in the US state of Utah. Three rescuers have died and six have been injured during efforts to reach a group of coal miners trapped underground in the US state of Utah.
It is thought that the rescue workers were caught in a cave-in as they tried to dig a tunnel to the spot where it is believed the six miners are trapped.It is thought that the rescue workers were caught in a cave-in as they tried to dig a tunnel to the spot where it is believed the six miners are trapped.
Several of the rescuers are being treated in nearby hospitals. The collapse happened at 1830 (0035 GMT), according to safety officials.
No contact has been made with the six trapped miners since a tunnel collapsed 1,500ft (457m) underground on 6 August.No contact has been made with the six trapped miners since a tunnel collapsed 1,500ft (457m) underground on 6 August.
The accident is another setback to the attempt to reach the miners. name="text"> class="bodl" href="#graphic">Utah mine layout and location
Dirk Fillpot, spokesman for the federal Mine Safety and Health Administration, said all rescue workers had been evacuated from the mine. The accident is another setback to the attempt to reach the miners and it is unclear whether rescue operations will resume on Friday.
He said the accident was caused by a "mountain bump" - a build-up of pressure inside a mine from overhead rock that forces surrounding rock and coal to shoot out of the walls with great force. Finding volunteers willing to go back in is just one of the mounting dilemmas for this dangerous and now fatal rescue mission, reports the BBC's Duncan Kennedy.
The governor of Utah, Jon Huntsman, said the state had "witnessed a most unfortunate incident on top of last week's tragedy". 'Mountain bump'
"I hope the lessons we learn from this week in Utah will be instrumental in improving mine safety everywhere," he said in a statement. Since the first mine collapse, rescue teams had tunnelled about 250m towards the trapped miners, with about 350m to go, when the latest accident happened.
Experts say the chances of finding the six trapped miners alive are now slim. Dirk Fillpot, spokesman for the federal Mine Safety and Health Administration, said the accident was caused by a "mountain bump" - a build-up of pressure inside a mine from overhead rock that forces surrounding rock and coal to shoot out of the walls with great force.
Initially the mine collapse was blamed on an earthquake, but experts have since suggested the shafts might have caved in with enough force to register on seismographs. Rescue efforts to reach the trapped men have also been severely hampered by frequent seismic movement inside the mountain, which has caused the walls of the mine to collapse on several occasions.
This has led to speculation that mining procedures could have triggered the incident, but that has been strongly denied by the mine company. On Wednesday, a seismic jolt caused one of the mine's supports to burst, partly burying a machine being used to clear the shaft.
Mr Fillpot said all rescue workers had now been evacuated from the mine. Some 130 people had been involved in the operation.
The governor of Utah, Jon Huntsman, later visited the injured rescuers at Castleview Hospital in the nearby town of Price.
"Tonight we have witnessed a most unfortunate incident on top of last week's tragedy," he said in a statement.
"I hope the lessons we learn from this week in Utah will be instrumental in improving mine safety everywhere."
Experts say the chances of finding the six trapped miners alive are now slim, although on Wednesday hopes were raised after listening devices picked up noises.
Initially the collapse was blamed on an earthquake, but experts have since suggested the shafts might have caved in with enough force to register on seismographs.
This has led to speculation that mining procedures could have triggered the incident.
The workers may have been using a technique known as "retreat mining", where the last standing pillars of coal are pulled down and the roof is allowed to fall in.
The mine's owners have repeatedly insisted their operation was safe and that the mine collapse followed a natural earthquake.
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