World leaders are sending support and sympathy to the families of the men who died at the Pike River coal mine.
Chile's mining minister Laurence Golborne Riveros recalled the recent rescue of 33 trapped Chilean miners in his message.
"Once again mining is mourning," he said.
"My condolences to
the 29 families that are suffering in New Zealand."
Australian Prime Minister Julia Gillard said all of Australia sent its condolences for the loss of the 29 men.
She paid special tribute to the two Australians who died in the mine, 23-year-old Josh Ufer and 49-year-old William Joynson.
"This is tragic news. Twenty nine families have been hoping, praying, waiting to hear good news and now they've heard the most terrible news.
"Our hearts go out to them and on behalf of the Australian people I give the condolences of this nation."
United States Secretary of State Hillary Clinton said the loss of the 29 miners would be mourned around the world.
The "Kiwi strength and spirit" she observed on her recent visit to New Zealand will help get the nation through the tragedy, she said.
"You have come through adversity before, and I know you will do so again."
Queen Elizabeth II and her son Prince Charles both sent condolences.
The Queen paid tribute to the efforts of rescuers and to "those who will have a part to play in the task of healing the pain that is being felt throughout New Zealand and around the world".
British Prime Minister David Cameron said the tragedy was "immensely sad".
He said his thoughts were with all those connected to the lost men, in particular the relatives of United Kingdom miners Peter Rodger and Malcolm Campbell.
"I know our High Commission and the consular officials are in touch with their families and doing everything to help at what must be an impossibly difficult time."
Commonwealth Secretary-General Kamalesh Sharma said all Commonwealth citizens shared New Zealand's sense of "despair and loss".
"In this dark hour for the people of New Zealand, we extend our sympathy and solidarity to you all."
That solidarity was echoed by Scottish First Minister Alex Salmond.
He has written to Prime Minister John Key expressing "deep condolences" for the men killed.
Pope Benedict XVI delivered a special blessing for the miners' families from Vatican City.
He prayed they would be given courage and strength.
World offers Pike River solidarity
US Secretary of State Hillary Clinton acknowledged the 'Kiwi strength and spirit'. Photo / Mark Mitchell
World leaders are sending support and sympathy to the families of the men who died at the Pike River coal mine.
Chile's mining minister Laurence Golborne Riveros recalled the recent rescue of 33 trapped Chilean miners in his message.
"Once again mining is mourning," he said.
"My condolences to
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