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Digging into history

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The modern mining industry owes much tothose pioneers who developed steam-powered automationto move large amounts of dirt。 Aaron Hall looks backat a modern company's involvement in one of thegreatest frats of earthmoving ever recorded。

2000

The Miner

The Miner

ISSN：1030-0880
年,卷(期)：2000.(3/4)