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
MTN $5.2 billion fine in the country. The reduced fine must be paid within a period of three years. The telecommunication company also promised to list its stock on the Nigeria Stock Exchange. According to Premium Times, Ferdi said that "MTN will pay the NCC the sum of N330 billion in full and final settlement of the fine in line with an agreed payment plan,". In line with the agreement, the last tranche of the bill will be paid on 31 May 2019. The minister of communication in Nigeria, Adebayo Shittu, confirmed the payment of $254 million, the first tranche of the three-installments settlement