“…There were many attempts to evaluate theoretically the mass 297 and heat transfer 336,372 in a mechanical device on mechanical treatment and to model the macrokinetics of a mechanochemical transformation. 126,243–251,300,312,336,373–387 It remains a great challenge to measure local temperatures and concentrations experimentally. This could be achieved for such processes as fracture, 324,388–390 or tableting, 391–393 but remains an area needing development for treatment in a mill or extruder.…”