TAB is on the right track .
During the Gold rush the miners, with the exception of Hearst who was more of an investor, were not the ones who got rich and famous.
It was the people like Strauss, Field's, and the others who supplied the clothes, tools, and other necessities to the miner's.
They were the ones who built actual durable fortunes.
I understand that, on the Comstock lode at least, the Laundry women panned the dirty wash water and made extra $.