Season 4 Episodes6
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Ranked #2 of 6 in Season 4•+0.1 vs season avg
The world's largest land-mining machine; how airboats are built; warehouse for car parts.
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"Land Mines, Air Boats, Warehouses" is episode 4 of How Do They Do It? season 4. It scored 7.3/10 from 10 votes, ranking #2 of 6 episodes this season (season average 7.2). It aired on April 18, 2007.