Just search for “Hibbing Minnesota”, it’s surrounded by open pit mines (you can spote them by their pink and blue (water) colors. The biggest one north of town is the Hull Rust I believe.
You can also type in Ruth, NV or Toole, UT (click on the first option that pops up then zoom out and scroll east. you can’t miss it) to find either mine. They are both large enough that they can easily be spotted.
Impressive website!
greetings,
Marc Immeker
Sometime during the '60s [i]MR/i featured a layout - it was TT Scale I do believe - that had an open pit mine. It wasn’t particularly large and I don’t believe it had tracks leading into the pit but it is the only representation of this industry I can recall ever seeing in the hobby press.