Dr.-Ing. Rudolf “Rudy” Greuer of Houghton, Professor Emeritus of Mining Engineering at Michigan Tech, passed away on Sunday, January 18th, 2015 in Michigan’s Copper Country. Rudy was born on April 6th, 1927, in Guetzlaffshagen, German Pomerania. Rudy was a veteran of World War II, serving in the German armed forces prior to spending a period of Soviet captivity as a prisoner of war. After his military service and during his studies, Rudy worked as a miner in metal, coal, and potash mines in Germany and the United Kingdom. He attended the School of Mines in Freiberg, East Germany from 1948 to 1950. He later graduated with a Diplom (Masters) of Engineering in Mining Engineering from the Technical University at Clausthal, West Germany in 1953. He was granted the Doctor of Engineering in 1955 from the Technical University in Mining Engineering.