Boris Romanovich Rotenberg Boris Romanovich Rotenberg Boris Romanovich Rotenberg (, born in Leningrad on 3 January 1957) is a Russian business man and oligarch. He is co-owner (with his brother Arkady Rotenberg) of the SGM (StroyGazMontazh) group, the largest construction company for gas pipelines and electrical power supply lines in Russia. He was listed by Forbes as Russia's 69th wealthiest person in 2016 with a net worth of $1.07 billion. He is considered a close confidant of president Vladimir Putin. Rotenberg was very involved in martial arts between 1968 and 1978, particularly judo. He trained alongside Vladimir Putin and won several awards for
Arkady Mikhailovich Chernetsky Arkady Mikhailovich Chernetsky Arkady Mikhailovich Chernetsky () (born May 8, 1950) is a Russian politician who has served as Mayor of Yekaterinburg, Sverdlovsk Oblast, Russia since January 1992 to November 2, 2010. Arkady Mikhailovich Chernetsky was born on May 8, 1950 in Nizhny Tagil to an engineer (his father) and a surgeon (his mother). In 1972, he graduated from the metallurgical department of the Ural Polytechnic Institute. From 1972 to 1974 Chernetsky served as a tank platoon commander in the Soviet army. He was stationed in the Turkmenia Military District. He completed his term of service as a colonel. After