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How Do They Do It?Massive tunnels are built to prevent blackouts in one of the world's biggest cities; large areas pine forest are turned into perfect pieces of timber.
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How Do They Do It? Seasons 10-11

How It's Made, Part 1

How It's Made, Part 2

How It's Made, Part 3

How It's Made, Part 4

How It's Made, Part 5

How It's Made, Part 6

How It's Made, Part 7

How It's Made, Part 8