TNK-BP, a Russian-British company, is under fire concerning 784 environmental accidents reported in 2011, compared with 20 by rival Lukoil.
Scheme would allow epic journeys from London to the Japanese capital with major international crossing between Sakhalin and Hokkaido.
Map of shame: Greenpeace highlights junk and debris in dozens of sites across the 'pristine' environment.
One region alone - Yakutia - has 5 million tons scrap metal dumped in polar regions, an ugly Soviet legacy.