Toronto Stock Exchange (TSX): CVVVANCOUVER, April 13, 2012 /PRNewswire/ - CanAlaska Uranium Ltd. (TSX - CVV) ("CanAlaska" or the "Company") is pleased to announce a preliminary summary of drilling for its two winter drill programs in the Athabasca Basin. Drilling was undertaken at both the West McArthur and Cree East projects. The West McArthur Project is a 50/50 joint venture between the Company and MC Resources Canada Ltd., a subsidiary of Japan's Mitsubishi Corporation. The Cree East Project is a 50/50 joint venture between the Company and a consortium of S. Korean companies, comprising Hanwha Corp., KEPCO, KORES and SK Networks, Drill core samples are currently awaiting geochemical analyses. Crews are departing the field, and detailed data interpretation is due to commence. The two programs comprised over Cdn$6 million in exploration expenditures with 12,434 metres of drilling. West McArthur Project: Seven diamond drill holes (WMA 028 to 034) were completed in February- March 2012, to test a series of individual zones where the resistivity lows were coincident with the EM conductors within the Grid 5 area. Total meterage drilled in the season was 6,422 metres, including one abandoned drill hole WMA031. The winter 2012 drill programme has demonstrated on Grid 5 the presence of requisite geological environment for unconformity uranium deposits. Significant faulting and fracturing are present in a number of drill holes, with individual radioactive spikes or elevated radioactivity in zones of hydrothermal alteration. From drill core and geophysical data, Grid 5 basement lithologies have now been confirmed to consist of mostly semi-pelitic to psammitic assemblage of rock units, containing a central unit of graphitic pelites. Locally there is alteration typical of the geological environment favourable for uranium mineralization. Two of the drill holes showed pelitic basement assemblages with graphite units. The other five holes showed metasedimentary basement rocks composed of a mix of semi-pelites and psammites. Pegmatite and granite interlayers are present in all drill holes. Frequent fracture zones and major faults were intersected in drill holes WMA028, 032, 033, and 034. Drill hole WMA029 had a broad zone of intense fracturing at 617 to 633 metres. The basement rocks are deeply altered by hydrothermal action in drill holes WMA028, 033 and 034.