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
Rotenberg (hills) the Rhume and Eller rivers in the south. These rivers and the small streams that rise in the hills belong to the catchment area of the Leine, several kilometres to the west. The hills in and near the Rotenberg include the: Rotenberg (hills) The Rotenberg is a hill range, up to 317.3 m high, in the Lower Saxon Hills in southeastern Lower Saxony, Germany. The Rotenberg ridge is oriented northwest-southeast and measures about 14 kilometres long by 2 kilometres wide. It lies in the district of Göttingen in the southeastern corner of the Lower Saxon Hills. It is located on