It is a compact and versatile single-arm electrohydraulic jumbo that achieves a maximum drilling of 12 feet in the development of fronts and / or small galleries of 2.10 meters wide x 2.50 meters high, up to 3x3 meters. It is used mainly in mineralized structures or narrow veins where selective mining is required to optimize the recovery of the mineral, thanks to its COP1238 drilling rig.