Northern Dynasty Minerals Customer Service Phone Numbers Customer service: (604) 684-6365 Toll Free: 1-800-667-2114   Northern Dynasty Minerals Headquarters Info, Email, Phone number, Website and live chat Information Northern Dynasty Minerals Ltd. acquires, explores for, and develops mineral properties in the United States. Its principal mineral property is the Pebble copper-gold-molybdenum project that includes 2,402 mineral claims covering