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
Tourism in Ecuador Amazon. The park is horseshoe-shaped and extends from the south of the Napo River and north of Curaray river, extending the middle basin of Tivacuno River According to a recent study the Yasuní National Park and the underlying magnified area are considered the most biodiverse place on the planet for its richness in amphibians, birds, mammals and plants. Significantly, the Ecuadorian Amazon region is rich in oilfields and the oil economy is the pillar on which the economy of Ecuador is held from the 1970s. Given this in the year 1998 the government of Jamil Mahuad declared the southern part