Outside of Alcan Shawinigan plant (Primary Metal - Production of primary aluminum). Chimneys blowing lots of smoke (air pollution). Factory workers leaving work. An employee minivan coming out from the parking lot and turns onto the street. Two chimneys, one with a cabin and another built around spewing smoke. Chimney with smoke over cloudy sky background. Keywords: ALCAN,CHIMNEY,MAURICIE,QUEBEC ,SHAWINIGAN