BHUBANESWAR: While the multi-crore mining scam is unfolding everyday, national BJP president Rajnath Singh today deputed a party delegation to visit the mines-rich Keonjhar and Sundargarh districts to assess the illegal mining. A delegation of the State BJP comprising Bijay Mahapatra, Dharmendra Pradhan, Rudranarayan Pani and Jatin Mohanty today met national leaders of the party, including LK Advani, Rajnath Singh and Arun Jaitley and briefed them about the scam under the active patronage of the ruling BJD. They said that the lapses, involvement and negligence of the State government machinery in the scam are becoming obvious with each passing day. ``The State Government has failed to discharge its responsibility in curbing illegal mining and the State unit of the BJP has taken up the issue with sincerity by raising it repeatedly in and outside the Assembly,