'Huff and puff' technology questioned after leak at Alberta oilsands site

[rwana]

http://i.cbc.ca/1.2252087.1382731978!/fileImage/httpImage/image.jpg_gen/derivatives/16x9_460/canadiannatural.jpg Greenpeace is raising concerns about the technology an Alberta oilsands operation uses to extract crude, following a second leak at a Canadian Natural Resources facility.


more .... (http://www.cbc.ca/news/canada/edmonton/huff-and-puff-technology-questioned-after-leak-at-cnrl-wolf-lake-site-1.2880790?cmp=rss)