DEVELOPED BY 600 FT SHAFT WITH LEVELS EACH 100 FTEXTENSIVE WORKINGS 30000 TONS ON DUMP IN 1921CERARGYRITE & CERUSSITE. OXIDIZED-ORE EVEN ON 600 FT LEVELCONNECTS WITH COMMERCIAL & GLAMORGANWORKED 1870'S-90'SNMBMMR MINES INDEXUNPUBLISHED REPORTS STALMANN 1919 & WRIGHT 1921