The Nigerian Senate has invited 15 companies including Dangote Oil Refinery, NIPCO Gas Limited and NIPCO Plc to explain how they spent over N120billion intervention fund disbursed to them by the Central Bank of Nigeria. The Senate in a memo to the companies, signed by Senator Jarigbe Jarigbe, Chairman, Senate Committee on Gas, and obtained by SaharaReporters on Tuesday, said the companies are beneficiaries of the disbursement from the Nigeria Gas Expansion Program (NGEP) Intervention Fund by the Central Bank of Nigeria (CBN).