Fort McMurray, Alberta, CAN, 20090721: Wells being drilled near the Statoil SAG-D Processing Plant in Leismer. SAG-D, Steam Assisted Gravity Drainage, makes a smaller footprint than open pit mining, but release more CO2 due to the extreme amounts of energy used in the excavation process.
Photo: Orjan F. Ellingvag/ Dagens Naringsliv