This is the MULE135 from Construction Robotics, which makes heavy objects (up to 13 5pounds), like CMU block, virtually weightless. The reduction of fatigue from not having to lift thousands of pounds of material a day, the company says, can produce between a 30% and 50% productivity savings. The reduction of fatigue can also result in a lower risk for injury and increased quality. Each MULE costs in the $70,000 range, which is reasonable if the productivity savings mentioned above can be achiev

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