Roca Mines Inc. (Tier2) (TSX:ROK) Last Price (CAD) $ 0.2 Change ▼ -0.005 (-2.44%) Bid 0.19 Ask 0.20 Volume 310,750 Day's Range 0.19 - 0.21 Click for Detailed Quote Page Last Trade:15:57:36 EST Feb-2-09