3201 RFP Drilling of Extra deep Boreholes in Gumuruk.pdf (457.1 KB) Annex 1 2 and 3 Technical SPECIFICATIONS EXTRA DEEP BOREHOLE DRILLING GUMURUK _V1.pdf (262.6 KB) Annex 4 BOQ Borehole Tender Gumuruk _reviesed_v1.pdf (194.3 KB)