The following are the biggest percentage gainers on the TSX Venture Exchange in mid afternoon trading with their price movements RATHDOWNEY RESOURCES (RTH.V), $0.23, +0.07, +43.75% LARGO RESOURCES (LGO.V), $0.18, +0.04, +28.57% QUESTFIRE ENERGY (Q A.V), $0.74, +0.16, +27.59%