Chevron
Chevron is one of the world's largest energy companies, originally an offshoot of Rockefeller's Standard Oil. Today Chevron is saddled with a long, sordid history of accusations of environmental despoliation on multiple continents and operates in the vast Canadian tar sands deposits already under development. Chevron also seeks several different developments of extreme extraction in multiple nation-states around the world, maintaining a portfolio of every form of current development and some future developments possible in oil and gas.