This excerpt taken from the SU 6-K filed Jun 4, 2008.
Opinion of Canadian Counsel for Company. At the Closing Time, the Representatives shall have received the favorable opinion, dated as of the Closing Time, of Blake, Cassels & Graydon LLP, Canadian counsel for the Company, in form and substance reasonably satisfactory to counsel for the Underwriters, together with signed or reproduced copies of such letter for each of the other Underwriters, to the effect set forth in Exhibit B hereto and to such further effect as counsel to the Underwriters may reasonably request. Such counsel may also state that, insofar as such opinion involves factual matters, they have relied, to the extent they deem proper, upon certificates of officers of the Company and its subsidiaries and certificates of public officials. In giving such opinion such counsel may rely, as to all matters governed by the laws of jurisdictions other than the laws of the province of Alberta and the