After careful and long-term design preparation, these days we shipped motorized cable reels Hartmann & König intended for powering equipment working in a surface coal mine. Both drums are characterized by the ability to wind up a cable for horizontal extraction of 230 m and a total travel length of almost half a kilometer. The drums are equipped with accessories for checking slack or tight cable. One drum is equipped with a low-voltage ring collector for an 18x2.5 mm2 cable. The second drum winds a cable 3x35 + 1x25 mm2 capable of transmitting 6kV.