Thirty-one of the miners who endured 69 days trapped underground when a northern Chile mine collapsed are suing the government for negligence, saying there was lack of security, one of the miners said overnight.

"We want what we went through at the bottom of that mine to be recognised. We are here to say that the 31 of us wish that all our suffering, and the suffering of our families, is recognised," miner Luis Urzua told reporters.

A total of 33 miners were trapped underground from August 5 to October 13, 2010, after a cave-in at the San Jose gold and copper mine in northern Chile.

After 69 days and a spectacular rescue operation with the world watching they were hauled out safely from 700 meters below ground.

A lawyer for the group filed the suit against the Chilean government on Friday, requesting $540,000 in compensation for each of the miners.

The miners allege that the National Geology and Mines Bureau had failed to carry out proper inspections of the mine's security and working conditions.

One of the plaintiffs, miner Claudio Yanez, said the mine had had accidents in the past and at one time had been closed.

"Everyone knows that in 2005 and 2007 there were two deaths in this mine, and that since then it had always been a dangerous mine," he told CNN Chile.