The Fourth occurrence is situated near the contact of Mississippian to Lower Permian Milford Group strata, consisting of argillite, limestone and quartzite, and porphyritic granite, granodiorite and granite gneiss of the Middle Jurassic Nelson Batholith.

A vein, 0.9 ,metres wide, strikes southeast. A 150 metre long tunnel was reported in 1895. Assays indicated 686 to 2606 grams per tonne silver and 10 to 38 per cent lead. Galena is presumed. In 1968, approximately 5.5 tonnes of mud and high grade orew was stacked but not shipped. Some stripping and trenching were done in 1979.