Environmental protection has been an important concern to residents of Wietersdorf for decades. When the RTO was commissioned in 2017, it marked a milestone in emissions control for the Wietersdorf w&p cement works. With its currently unique combination of a mercury-reducing system – “Xmercury” – a fully modern dust collection system and the downstream RTO – regenerative thermal oxidation system – the cement works can claim to be one of the cleanest in the world.