Oliver was rich but he wasn't rich enough to pay for a huge mining operation so he went to the two most richest people in the world John Rockefeller and Andrew Carnegie, Oliver made deals with them and they helped to fund the operation but in return they each controlled a certain part of the mines and they all became very rich.
Today the iron industry is still sorta like it was back then iron is still used to make steel, iron is helping the U.S. become an