The big prize here is a 20% stake in the Fort Hills oil sands project, an open-pit mining operation targeting 3.4 billion barrels of bitumen.

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Tander's car led for much of the race but dropped back with an hour to go after a pit stop to top up with some oil.

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Kovalainen revealed later that he had accidentally hit the pit lane speed limiter button while removing an oil-smeared tear-off from his visor.

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Bigger is better at open-pit mines at the top of the Andes or on the vast oil sands of western Canada, since miners spend up to 30% of their budget hauling.

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