Answer:
There were many inintended negative consequences. The state became crowded with people looking to find gold. The environment got destroyed and natives living in the area were removed from their lands that they lived in their entire lives.
Everyone that is below the established level of what can be called “Elite” is what the Proles are, in '1984'. The proletariat, by definition, is someone who works to survive. Therefore, anyone who has to work, to earn a living and survive, is Prole.