NAB files reference against ex-minister Inquiry reveals illegal mining contract was awarded in Rajoa, Chiniot areas LAHORE: The National Accountability Bureau (NAB), has filed a corruption reference against former minister for mines and minerals Sibtain Khan along with eight others involved in illegally granting of a multi-billion contract in connivance with the Management of Punjab Mineral Development Corporation (PUNJMIN). As per the reference details, the anti-graft’s Combined Investigation Team (CIT) launched a thorough probe over an alleged loop-sided agreement after being referred from Lahore High Court (LHC) that a mining agreement between ERPL and PUNJMIN’s management for mining of huge iron ore deposits comprising 500 metric tonnes located in Rajoa and Chiniot areas of Punjab.