Petra Diamonds results beat expectations on strong sales, production

Clockwork precision

Seven out of 10 companies faced decreases in their attributable gold output.

The Siemens Drive Technologies Division has commissioned a gearless belt conveyor system in the Antapaccay copper mine in Peru. This is the first large-scale reference for this technology outside Germany.

Top-seven gold producing countries.

All-time production highs at Kazakhstan and Niger.

The bits are in high demand by wealthy collectors willing to pay about $17 for a 2 cm piece.

The United States, Canada, Australia and New Zealand also have their own-targeted measures against the African leader and his inner circle.

The mining giant's profit is expected to slide for the third consecutive on Wednesday, driven mainly by last year's plummeting iron-ore price.

Projected production increase is unlikely to meet rising demand, industry analysts say.