The Alaska-Gastineau Mine was located within the Silver Bow Basin. Its concentrating plant was situated near Thane. The mine had a shaft running through Mount Roberts that reached the Perseverance Mine near Gold Creek. It adjoined the Alaska-Juneau Mine. The mine's low-grade ore is situated on a mountain above the Gastineau Channel. Its ore body covered approximately , more than in length, with of tunnels and crosscuts. According to Jackling, the block of ore had at least 100,000,000 tons above sea level. The property consisted of a group of claims whose lode system covered . It was operated on a 6,000-ton daily capacity.