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 (hills) the north, Herzberg am Harz to the northeast, Bad Lauterberg to the east, Duderstadt to the south, Göttingen to the southwest and Northeim to the northwest. According to the official classification of natural regions of Germany the ridge belongs to the landscape unit of the Eichsfeld Basin in the Weser-Leine Uplands. The Rotenberg is surrounded by the following other ranges: the Harz Mountains to the north and, somewhat further away, the Ohm Hills to the southeast and the Göttingen Forest to the southwest. The Rotenberg hills lie on the watershed between the Oder and Beber rivers in the north and