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^ “Oil Sands History”. Unlocking the Potential of the Oil Sands. Syncrude. 2006. http://www.syncrude.ca/users/folder.asp?FolderID=5657. Retrieved 2008-02-17.
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^ Dutta, Ashok (2007-12-12). “ConocoPhillips aims high”. Calgary Herald. http://www.canada.com/calgaryherald/news/calgarybusiness/story.html?id=b9f4f1b4-d404-4d23-bfd9-394d1703e3f5&k=84901. Retrieved 2007-12-12.
^ Alberta, Employment, Immigration and Industry (December 2007). “Alberta Oil Sands Industry Update” (PDF). Government of Alberta. http://www.alberta-canada.com/energyCommodities/files/pdf/oilSandsUpdate_December_2007.pdf. Retrieved 2008-04-01.
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