This paper presents a large-scale research experiment carried out within the TAPAS project, where multiple mobile manipulators were integrated and assessed in an industrial context. We consider an industrial scenario in which mobile manipulators naturally extend automation of logistic tasks towards assistive ones. In the experiment, we included tasks such as preparatory and post-processing work, e.g. pre-assembly or machine tending with inherent quality control. In the experiment, we deployed the two heterogeneous mobile manipulators Little Helper and omniRob in a production scenario at Grundfos A/S, a manufacturer of water circulation pumps, in Denmark. The experiment showed that mobile manipulation is at a level of technology readiness th...