Commercial ships operating exclusively on the Great Lakes have far longer lifespans than oceangoing ships as their hulls aren't exposed to the corrosive effects of salt water.

Phare Pleigh's video posted in his comment is a fascinating look at American heavy industry.

Would they call it the Manda Ore-ian?

By the time of this photo, amazing Hulett ore unloaders were being constructed to unload much larger ships in far less time. Below is a video from as late as 1992 showing these machines in operation. Sadly, these newer school machines have now been replaced by shipboard unloading systems.

A little after 2 minutes the video takes you to the operator's cab located just above the clamshell bucket.

https://www.youtube.com/watch?v=1RJfnk2S330

This is the barge Manda, constructed in 1896 for the Pittsburgh Steamship Company. It is at the New York, Pennsylvania & Ohio (NYPANO) dock on Whiskey Island along the old riverbed of the Cuyahoga River. Unloading can commence or resume once some empty hoppers or gons are spotted under the four clamshell bucket sets. The cable system between tracks will move along the freight cars. The clamshells will be replaced by two Hulett unloaders that will last until Conrail is created. The new carrier finds no use for the cramped, old facility as the massive C&P dock on the lakefront can easily handle the business.