Dyckerhoff CEO Peter Steiner is to step down after just a year at the top of Germany's number two cement maker to become finance chief at engineering group mg technologies, Dyckerhoff said on Tuesday.  Dyckerhoff, controlled by Italy's Buzzi Unicem, said its supervisory board would quickly set about finding a replacement for Steiner, who has been a board member at the company since 1998 but only became chief executive in January of this year.