American Ethane Company website nor by its publications although these foreigners have significant interests in American Ethane. Finally, Konstantin Nikolaev is a partner and close associate of Vladimir Putin's inner circle through Igor Levitin, Alexey Mordashov, Arkady Rotenberg, and Gennady Timchenko. American Ethane Company American Ethane Company, LLC (AEC) is the largest producer of ethane in the United States. It is a Houston, Texas, based American petroleum company established in January 2014 with offices in New Orleans. It is privately held with large investments from Russian oligarchs who are close to Vladimir Putin's inner circle. As of July 2018, Konstantin Nikolaev, Mikhail Yuriev,
Rotenberg (Stuttgart) of Württemberg ). After his death in 1864, King William was also buried in the mausoleum (German: "Grabkapelle Württemberg"). Today the mausoleum is an important local landmark as it is visible from many areas of east Stuttgart. Note: Rotenberg should not be confused with other towns with similar-sounding names which are better known. 40 km SW is Rottenburg am Neckar, 80 km N is Rothenberg and 90 km NE Rothenburg ob der Tauber. Rotenberg (Stuttgart) Rotenberg is a village which is a part of the Untertürkheim district of the City of Stuttgart, Germany. The area overlooks Untertürkheim and the Neckar