I used to push coal at a terminal made specifically to distribute coal. One of I think 3 in the nation. Drove a monster dozer. (The fun part). People would be in total shock the amount of coal produced and exported. Every day, 365 days a year. Countless mountains of it. Day after day. 90% of what we produce, is exported. The 10% we keep for our use, is still mountains of it that would shock most.
Here is a pic. This is just what you can see from the camera view. Multiply this by 30 more and you start to grasp what one facility moves. This is me at an elevation of 180'. We were unstacking this one at this time.
These piles were 400'x400'x200'Heigth. This was one of the smaller pile fields. We actually had maps on board to find our way around the piles. It takes about 4 days to stack it, and about 2 days to unstack and convey it onto a ship.
On the large field, the piles are 900'x900'x200'. They are 1500 train car loads. We had 10 of those.
The terminal operated 24/7/365.
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Not gonna lie. It was fun driving an 80,000 lb, 14' high dozer. One blade full (made specifically for coal) could push 100 tons of coal. Up a 30° incline.