Argillites and argillaceous quartzites of the Lower Jurassic Hall Formation (Rossland Group) contain a quartz vein with pyrite and galena which strikes 350 degrees and dips about 15 degrees south- west. It was reported that in 1930 the lower tunnel, already 27 metres long, was extended considerably. Shipments of ore from the Second Chance, totalling 10 tonnes, were made in 1932, 1933 and 1934. A total of 280 grams of gold and 155 grams of silver were recovered.