The company is working with Diamond Multimedia, creators of the Rio, to release some of its content in a secure format that can be played on the device.

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Last week the rebels made six attacks on foreign companies working in the diamond-rich north-east.

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Diamond has been working for some time to get its "Crystal Lab" ready for Level 3 work, and the Oxford researcher used the US conference to announce that the preparation was now complete.

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We have all been working on different stories including the Olympics, the Diamond Jubilee and Japan.

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Investments we made in marketing and pricing are working and building momentum behind the strength of our diamond engagement products.

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And so we look forward to working with Congress, working with the Senate, to get the nominee who replaces Mr. Diamond confirmed and other nominations that are still pending confirmed.

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When not in talks to buy diamond mines, Harry Winston, better known as an international luxury retailer, is working on its jewelry and watch business.

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