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View Diary: Shouldn't We Know Whether Tar Sands Causing Cancer With First Nations Before XL Pipeline Decision? (59 comments)

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  •  Tar, in general, is quite carcinogenic. We don't (2+ / 0-)
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    elwior, Ginny in CO

    know for sure what are the concentrations of various tar-derived carcinogens in dilbit. I bet we don't even know how carcinogenic some of them are since most studies of tar-derived carcinogens were tobacco-related. But there are certainly a lot more carcinogens in dilbit than in regular oil. Some of them are bad enough that even very low levels can be quite dangerous. So yeah, we need to have a very good idea what is in dilbit before transporting lots of it.

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