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The building industry is suffering from the highest accident rate and the fact that more than 60% of the employees are forced to quit due to invalidity. h3 consists of an vest with integrated accumulators on the back and the arm-supporting unit. To show a possible extension, a new kind of a drill, which runs by power from the back, had been designed. To support the arm, two different technologies were used. One traditional and one hightech artificial muscle technology. Main focus of the concept is to support the human and not relieve him of the work, because skills can only be trained by repetitions.