As he went in to hold a meeting with the mine management, they waited outside.
He gave jobs to only 5, 000 of the 7, 500 employees at the Orkney mine and halved the management ranks.
But South African miner Gold Fields, which owns the mine, said Barminco management made the decision after seeing the video on YouTube.
The investigation will determine the roles played by the police, the management of the platinum mine, Lonmin, the unions and government.
Across the street from Marikana, at a mine owned by Anglo American Platinum mine, a group of workers gave management until Friday to respond to a list of demands.
The move was designed, he says, to keep management in closer touch with its mine operations in Bangka and other islands.
With the latest technology, says Cho, the bank can measure the profitability of every branch employee and customer, mine its customer database and run sophisticated risk-management and credit-analysis programs.
But we do know that this tragedy was triggered by a failure at the Upper Big Branch mine -- a failure first and foremost of management, but also a failure of oversight and a failure of laws so riddled with loopholes that they allow unsafe conditions to continue.
He subsequently started a contracting business doing mine scut work and went on to buy low-producing gold mine shafts in 1994, turning them around using a lean management style.
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But what of management, whose responsibility it was to ensure the safety of the people who worked at the mine?
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The decision to put the Beau Sancy up for sale now was "not mine alone, " says Georg Friedrich Prinz von Preussen, a 35-year-old Berlin-based management consultant and current head of the House of Hohenzollern.
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