"None of the companies operating in Canada's tar sands have met a commitment to clean up the vast and expanding sprawl of toxic waste ponds, an official report has found."
"The report, from Alberta's Energy Resources Conservation Board, further challenges the Canadian government's claims to responsible mining of the tar sands.
Canada's prime minister, Stephen Harper, spoke to Parliament on Thursday. Three protesters were arrested during the visit.
The report focuses on the provincial government's promise to clean up and eventually eliminate a vast network of open ponds storing mining waste from the tar sands along the Athabasca river.
None of the seven companies operating in the tar sands met the original performance standard, set in 2009, during the last two years, the ECRB said in its report."