Rubicon further states on their site that major gold deposits in the Red Lake Camp extend to 3,000 meters.
Goldcorp's Red Lake Mine is now producing over 2 oz. Au/t at 5,487 Ft. below ground level, and is considered to be one of the richest mines in the world.
I guess that I would be pleased to have our mines produce Au at 5,500 ft. below the surface too. I expect this is going to be some year coming up.