One of Renewable Matter’s objectives is to open a dialogue on sensitive and difficult subjects, where environmentalists and industrialists can have opposite views. The use in cement plants of waste-derived alternative fuels is one of such bones of contention. Those in favour of the elimination of incinerators and landfills to reach Target Zero Waste see in the use of waste in cement factories a surreptitious way to promote its production and energy recovery, while believing that this should be discouraged at all costs. On the other hand, there are those who are convinced that using waste in cement plants is more appropriate, because these industries are constantly checked, rather than landfilling it. Anyhow, cement factory kilns need fuel (and communities should be conc...