Mining Minister Susan Shabangu said Anglo American Platinum (Amplats) had not consulted properly with the government on the production cuts.
This week a much bigger mining company, Anglo American, said the same.
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Anglo-American said it could start firing workers who fail to turn up.
RTE's Prime Time said Anglo went to the High Court in Dublin on Wednesday and lodged documents detailing its decision to call in the guarantees.
Earlier this month, Anglo American Platinum said it would cease production at four mine shafts in the Rustenburg region of South Africa, which could lead to the loss of almost 14, 000 jobs.
Analysts said Anglo American was likely impressed by his five-year stewardship of South African gold miner AngloGold at a time when both companies have been affected by widespread strike action in South Africa's mining sector in recent years.
The world's biggest platinum producer, Anglo American Platinum, said it would sack strikers who did not attend disciplinary hearings on Tuesday.
BBC: Anglo American and AngloGold chide South Africa strikers
The Finn is tipped to join McLaren-Mercedes although a spokesman said the Anglo-German team had yet to make a decision on a team-mate for Lewis Hamilton.
Anglo American Platinum has said it will cease production at four mine shafts in the Rustenburg region of South Africa, which could lead to the loss of almost 14, 000 jobs.
BBC: South African miner Amplats closes shafts and cuts jobs
"Shell will apply its advanced technology, operational expertise and global experience in the project to jointly develop the shale gas resources with CNPC, " the Anglo-Dutch firm said in a release on its website on 20 March, without giving any further details.
Aurigny Anglo Group chief executive Malcolm Hart said the buyout was the best solution for islanders as it would remove any uncertainty over the future of the Gatwick route.
Earlier this month, Corus, an Anglo-Dutch steel group, said it will lay off 6, 000 workers and cut production by one-fifth in Britain, where operations have been ravaged by sterling's strength.
Mr Kenny said the disappearance of Anglo Irish Bank and the Irish Nationwide Building Society, which is also held by IBRC, from the Irish financial landscape was "long overdue" and that without banking costs, Ireland's debt levels would now be below Germany's.
Rio Tinto, an Anglo-Australian mining company, recently said it was withdrawing from a gold-mining project in Kurdistan.
Earlier this year, Anglo-Australian mining giant Rio Tinto said its chief executive Tom Albanese would forgo his annual bonus.
Analysts said since the news from Anglo American Platinum to shutter four mines came out on Tuesday, the initial market reaction to the information was captured in this report.
FORBES: FOCUS: Speculators Start Buying Precious Metals Futures, Options Again -CFTC
Analysts said the deal between the two Anglo-Swiss companies would now likely be backed by Xstrata shareholders.
Some of the pieces are fragments that fit with parts of the original hoard of Anglo-Saxon gold and silver, archaeologists said.
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There was at least a chance that Anglo American could increase that buyback further, UBS said, when the miner announces it half year results for 2007 in six months time.
Christopher Knight, a theologian and member of Forward in Faith, said that the grouping counted at least 800 Anglo-Catholic priests among its members and "the signs are that more priests will leave from the Anglo-Catholic wing and their churches will be seriously affected".
Iron ore was the largest contributor to Anglo's profit in 2011, but the firm said production at its key Kumba Iron Ore unit fell 19% to nine million tonnes, after five million tonnes of production were lost at its Sishen mine due to the strike.
"It's very posh, similar in style to items found at the burial site at Sutton Hoo and tells us that the Anglo-Saxons potentially visited this place more than once", he said.
Noelle Nelson, the acting chief executive of Anglo-Australian mining giant Rio Tinto, which is backing the project, said the settlers' first-hand accounts at the State Library are "unrivalled".
Traditional Anglo-Catholics and conservative evangelicals would have been "threatened with exclusion" by the measure, he said.
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Lieutenant Colonel Al-Kitbi said contracts would also be signed for armament and communications with France's Thomson-CSF and Anglo-Italian firm Alenia Marconi.
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