[Drilling of 5 No (five) NX size upward non coring boreholes (4 Nos from RVIIC to RVIIB seam lowering the water of running development panels of RVIIB to RVIIC seam and 1 no from RVIIC to RVIIA seam for lowering the water from RVIIA to RVIIC seam) an] (Tender №116517532)