Tom Herbert was a French-Canadian working on the railroad being pushed through northern Ontario in the early 1900s. He discovered a vein in the face of a cliff and prevailed on the geologist William Miller to examine it. Miller, Ontario's first government geologist, was in the area looking into the discoveries of James McKinley and Alfred Larose. Miller reported:...“silver was lying in profusion at the base of the cliff.” This became Cobalt’s third mine. Herbert’s discovery became the richest silver mine in the Cobalt camp and one of the most productive in the world. Affectionately labeled as “Big Nip,” this mine yielded more than 91 million ounces of silver over 40 years of production.