The Jordanian government will sign a 40-year concession agreement with Estonian energy firm Eesti Energia to exploit the Attarat Umm Ghudran oil shale deposit, Reuters has reported. The agreement, which will be signed on May 11, will give the Estonian company a four-year limit to complete its assessments of the project and to decide if it will start its industrial phase with a 40-year concession with an optional extension of 10 years. The Attarat Umm Ghudran oil shale deposit is located in central Jordan, and is estimated to have 25 billion tonnes in reserves.