History of the oil shale industry in the United States Act of 1985 which among other things abolished the United States' Synthetic Liquid Fuels Program. Union finally bowed to continued low oil prices and closed the project in 1991, rather than complete the US$2 billion project. Over several decades, some of the world's largest oil companies (Amoco, Arco, Chevron, Exxon, Gulf, Phillips, Shell, Sohio, Sunoco, Texaco, Union Oil) had spent billions of dollars to start an oil shale industry in the Green River Formation, the world's largest oil shale resource. But in the end, cheap petroleum prices drove oil shale out of business. Even after the oil shale bust, some
2011 Bolivian indigenous rights protests the construction of the highway. Similarly, prior to the victory of left-wing candidate Ollanta Humala in Peru's election, several thousand indigenous Quechua tribes people blocked the border with Bolivia (whose post-colonial boundaries divide the Quechua tribes into at least two states) in protest against mining contracts given to a Canadian company that they said would poison Lake Titicaca, their principal source of water. They too vowed to continue their protests after Humala's election. Similarly, in March 2012, protesters in Ecuador began a cross-country march against fellow pink tide President Rafael Correa's policies for mining in the Amazon. In addition to