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IOSA is a group of five independent oil companies dedicated to the development of Canada's oil sands using in situ technologies to extract bitumen. IOSA member companies include: Athabasca Oil Corp., Connacher Oil and Gas, Laricina Energy Ltd., MEG Energy, and Osum Oil Sands Corp. The IOSA members have more than 25 billion barrels of recoverable crude oil between them. Today more than 50 percent of the oil sands are developed through in situ processes. Approximately 80 percent of Alberta's oil sands reserves are too deep to be recovered by surface mines and can only be recovered through in situ technologies, a process with a considerably smaller environmental footprint.