You sound so confident, you sure NMC is a con?
If they can mine gold and platinum for a profit, you still sure they are a con? Is it worth mining gold from their claims? What about when gold is over $500 an ounce. Will each up-tick in the price increase NMC's claim's value?
You should really see if a con will last this long, unless they have the goods in the ground. You ever been to a goldmine, it doesn't sound like you know anything about NMC. It is an experience you'll never forget if you ever get a chance to visit one and see gold bullion being produced.