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    Openpit mining is generally less expensive in terms of exploration, development, equipment and operation.

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    9. CVN78 Class Aircraft Carrier. At a cost of billion, a single CVN78class aircraft carrier is the single most expensive military weapon to exist in the world, though its low numbers mean that it has cost no more than 34 billion so far.

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    The biggest trucks in the world are used in mining, and perhaps calling them big is an understatement these trucks are truly enormous. The giant dump trucks used to haul heavy metal ores out of mining pits weigh in the neighborhood of one million pounds (453,592 kilograms) and can carry and dump more than 300 tons (300,000 kilograms) of material in the back.

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