A manipulator arm for being connected to a manipulator chassis frame disposed in particular in the periphery of a metallurgical smelting furnace includes a proximal end for being connected to the manipulator chassis frame and a distal end equipped with a first tool receptacle and serving to be connected to a shovel or bucket. The manipulator arm has a second tool receptacle at its distal end, the second tool receptacle being formed irrespective of the first tool receptacle and being intended to be connected to a hammer mill or a drilling machine.

The invention relates to an oxygen lance guiding assembly having an oxygen lance feeding device, which is disposed on a tap hole drilling unit. The tap hole drilling unit has a drilling rod guiding device for a drilling rod, which is driven by a drilling mechanism, on a receptacle configured to have the drilling mechanism disposed thereon. The oxygen lance feeding device is disposed in an operating position in a space formed between the drilling rod guiding device and the drilling mechanism in such a manner that the drilling rod guiding device serves to form an oxygen lance guiding axis.