Oil refineries and petrochemical Dow plant near Edmonton, Alberta. Chimneys and smoke. Private property signs. Various facilities of oil refineries near Edmonton, Alberta. Two tank cars of train stopped with petrochemical plant in the background. Orange sign "Private Property - No Trespassing - Dow Chemical Canada" with tank and factory behind. Another white sign "Property of Dow Chemical Canada - no trespassing". White smoke coming out of a chimney behind a fence (air pollution). Small building behind the fence with sign "Environmental monitoring station". Rusty Panel "Warning - High Pressure Ethylene Line" TILT UP PG chemical plant in the back (vice versa). Ball-shaped tanks. Yellow sign marked "Ethane" little sign "Warning - flammable liquid high pressure pipeline" (vice versa). Warning sign planted in the grass. Grey Smoke (hard to distinguish from clouds) escaping from a series of chimneys just above the grass. Cuff (handle-shaped flag indicating the wind direction) on the petrochemical plant. Orange sign "Private Property - No Trespassing - Dow Chemical Canada. Tanker truck traveling on the road. Chimneys and white smoke with purple wildflowers in the foreground (focus sets). Locomotives with words "Dow" arriving at the petrochemical plant. Pipes of all kinds behind the fence of the factory. Keywords: ALBERTA,DOW CHEMICAL,PETROCHEMISTRY,OIL REFINERY