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Darkest Depths and Other Undercround Megastructures

Binding: Hardcover
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Where is the deepest hole in the world? Which is the biggest drill in the world? How deep is the deepest underwater tunnel?

We dig deep mines in the ground to search for oil, coal, and diamonds. We also dig tunnels deep below the oceans and the land. Find out how engineers drill down deep below Earth's surface, and what challenges are involved in this work.

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ISBN: 9781609920968
Publisher: QEB Publishing, Inc.
Language: English
Page Count: 36
Size: 11.00" l x 8.50" w x 0.50
Series: N/A