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The Bagger 293 bucket-wheel excavator is arguably the largest man-made piece of machinery ever made . Constructed in Germany , the mega earthmover is the Guinness World Record-holder for largest land vehicle – towering at 310 feet tall , 722 feet long , and weighing over 31- million pounds . The bucket-wheel itself is over 70 feet in diameter and can move 8.510 million cubic feet of earth per day . The Bagger 293 requires five people to operate and is capable of working in the toughest conditions . Creative Commons ( CC BY-NC 2.0 ) Photo credit : © Udo Kempen 36 August 2014