so damn big it needed 2 sets of railroad tracks

 https://tucson.com/news/local/minetales/mine-tales-power-shovels-made-a-world-of-difference/article_b311bb89-28e4-5008-9b1e-fe0de41877b1.html

By the way, William Smith Otis invented the steam shovel in 1835 when he was just 22 years old. His cousin Elisha invented the elevator, you've probably seen the Otis name in many elevators, they both were descendants of James Otis, who immigrated from England to New England in 1631

https://www.aem.org/about/hall-of-fame/william-smith-otis

https://en.wikipedia.org/wiki/William_Otis

https://www.britannica.com/biography/Elisha-Otis