What the heck is a dragline, and how do they work? We’ve got the answers! We’re back with North American Coal to tour one of their massive draglines. These machines are the largest earthmovers in America, capable of moving well over 100,000 cubic yards of material per day. Using steel cables, they drag monster buckets through the earth, filling them in seconds. Then, they unload by tipping the bucket as they swing, flinging the dirt into huge piles. Without these machines, millions of Americans would be without power!