Pictures 22 Bald Mountain Gold Mill, Lead South Dakota Tweet 1992 VIEW OF BOILER HOUSE FROM SOUTH, SHOWING TRAM COAL DELIVERY ENTRY. 1992 INTERIOR OF BOILER HOUSE, BOILER FROM SOUTHEAST. 1992 BOILER FROM NORTHEAST. DOCUMENTATION PHOTOGRAPHS - MINE HEADS AND TRAMWAYS 1992 PORTLAND SCHOOLHOUSE FROM SOUTHEAST. LOCATED NORTHEAST OF PORTLAND HOISTHOUSE. 1992 FORMER PORTLAND TOWN BUILDINGS MOVED TO HILL NORTH OF PORTLAND IN THE 1980s. 1992 PORTLAND HOIST FROM SOUTHWEST. WYE TO HOISTHOUSE IN ON THE RIGHT, COMPRESSOR WING ON THE LEFT. PORTLAND MINE PORTAL ON LOWER LEFT.