Bariadi DistrictBariadi District is one of the five districts of the Simiyu Region of Tanzania, East Africa. As of 2022, the population was 383,385.HistoryPrior to 2012, Bariadi District was part of Shinyanga Region.EconomyThe Dutwa Ward contains one of the world's largest nickel deposits.WardsAs of 2002, Bariadi District was administratively divided into twenty-six wards: Bariadi Bumera Bunamhala Chinamili Dutwa Gamboshi Ikungulyabashashi Kasoli Kinang'weli Lagangabilili Lugulu Mbita Mhango Mhunze Mwadobana Mwamapalala Mwaswale Mwaubingi Nkololo Nkoma Nyakabindi Sagata Sakwe Sapiwi Somanda Zagayu