A preserved 1923 <a href="https://en.wikipedia.org/wiki/Bucyrus_International" class="extiw" title="en:Bucyrus International">Bucyrus</a> Model 50-B <a href="https://en.wikipedia.org/wiki/steam_shovel" class="extiw" title="en:steam shovel">steam shovel</a> at the Nederland Mining Museum in Colorado, USA.  This steam shovel is the last surviving Model 50-B, 1 out of 25 built! It was built to dig the Panama Canal. This very machine was shown on an episode of Mega Movers (Season 2 Episode 3) on the History Channel.
<a href="//commons.wikimedia.org/wiki/User:Grey3k" title="User:Grey3k">Grey3k</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>