Prime Minister Muhammad Shehbaz Sharif has expressed deep grief and sorrow over the loss of precious lives as a result of an explosion in a coal mine in Harnai.Condoling with the bereaved families, he prayed for the departed souls.The Prime Minister directed to accelerate efforts for the rescue of remaining miners. He said all possible medical treatment be provided to the injured miners.The Prime Minister said such incidents are very painful and sad. He said we stand with the affected families in this hour of grief.He said the government will provide all possible relief to the injured and affected families.Source: Radio Pakistan