ATLANTA -

Auto Remarketing learned Thursday that Mark Brunn has been named interim leader of Total Resource Auctions.

Mike Langhorne, Manheim senior vice president and chief business development and operational excellence officer, said, “Bill Tiedemann is retiring from Manheim as group vice president of Total Resource Auctions at the end of this month. As a result of his retirement, Mark Brunn, vice president of business development, has been named interim leader of Total Resource Auctions and will report to Mike.

“A long-time Manheim employee, Mark has extensive industry knowledge and experience and has held a variety of leadership positions within the company,” he continued. “Bill’s leadership helped us grow our salvage business. He has been a tremendous contributor not only to Manheim’s success, but to the industry overall.”

Tiedemann joined Manheim in 1989 as national operations manager. He took on his most recent post in March 2011.