fix articles 506251, mackenzie river
Tar Sands Processing requires massive inputs of water, energy, land, labour (tags)
For each barrel of oil produced from the tar sands, between two and 4.5 barrels of water is needed. The waste sand and water contain naphtha and paraffin, which are used in the extraction process, and oil leftovers like benzene, naphthenic acid and polyaromatic hydrocarbon, among others. Chemicals found in the tailing ponds are known to cause liver problems and brain hemorrhaging in mammals, and deformities and death in birds.