More Megastructures videos on other cannel! Named after one of Seattles early mayors, the .\r \r Megastructures Largest Digging Machine Documentary National Geographic Megastructures Largest Digging Machine Documentary National Geographic .\r \r Bucket Wheel Excavators are among the largest terrestrial vehicles ever constructed.\r \r Saya membuat video ini dengan Editor Video YouTube ( National Geographic, National Geographic Documentary, National .
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