While Cumberland County units were operating at a garage fire in Company 35's (South Middleton) first due area, tones dropped for West Shore companies to 417 Hummel Avenue for a house fire. PD arrived on scene reporting smoke showing. The fire was located in the basement of a 3 story, brick and wood frame, occupied duplex. Despite efforts of first due members, the fire was travelling the walls and was spreading vertically between the duplex. A second alarm was struck as heavy smoke blanketed the area and crews were evacuated from the structure. Heavy fire was reported in the kitchen and the second floor of the adjoining exposure. Firefighters made a great strop in keeping the fire from exposing to an occupied, 2 story, brick dwelling just feet from the fire building. A third alarm was struck bringing companies from Cumberland, Dauphin, and York Counties. Companies went in service with hand lines and master stream as heavy fire consumed the third floor and roof. The fire burned for several hours before being brought under control.