Buchen managing director Gerhard Röttgen to retire: “We at Buchen ...” Gerhard Röttgen has personified this statement like no other during his many years at Buchen UmweltService. It is difficult to picture what the Buchen Group has been doing since 1966, what has moved and pushed the company, without Gerhard Röttgen. He – together with his colleague Wolfgang Balter, who unfortunately passed away in 2008 – has been successfully managing the company since 1986. more