ProductionKenya and Tanzania revive '$1.1bn' gas export pipeline planPresidents of Kenya and Tanzania sign accord to study piped gas exports to MombasaGas deal: Tanzanian President Samia Suluhu Hassan (left) is greeted by Kenya's President Uhuru Kenyatta at State House in Nairobi, Kenya last weekPhoto: REUTERS/SCANPIXIain EsauLondon