Until recently, most mining was done by so - called average users and not by large mining operations. (coinfox.info)
Accordingly, the Guggenheims began to develop large mining operations in Northern Mexico, Harrimans built railroads, Morgans, Hearsts, and Whitneys developed enormous livestock ranches, and so on, employing thousands of Mexican citizens until, inevitably, the revolution moved northward. (bookbrowse.com)
This was a feat that involved persuading the interests of large mining operations. (bitcoinist.com)