I don't know how it started, probably as you said. We have had a lot of rain and the dragline is on the spoil side of the pit on a bench, digging the rest of the way down to get to the coal seam about 180ft from the top of the ground.
The model is a Bucyrus Erie 2570 with a 121cu yard bucket. Here is another picture of it in the background. In front of the walking dragline is another animal... a bucket wheel excavator and a cross pit spreader. The picture is blurry, but for reference, the spreader's main boom is about 800ft long. The white thing in front of it is a pickup truck, and this thing has tracks that are huge. Its total length is over 1,400ft long.
They have an article in the newspaper about the incident. It is sketchy on the details and in at least two places misstates it's weight is 6 tons.... But the article says a mine rep said that if they had to replace it, it would cost $125,000,000. Ouch.
Those are some huge dozers. I am always amazed at such large machines. Not just the operation of them but the engineering and construction of these things.
Robert, my grandpa used to be a contractor out at the mines and a custom baler. He had several Fiat Hesstons in the fleet along with Masseys, John Deere, and even a little Kubota. When I was little, I got to play on a lot of stuff. He later sold nearly all of his equipment but the one tractor he kept was the 90-90.