Roof bolting in ug by hiring of dgms approved portable hydraulic roof bolting machine with wet drilling arrangement drill 1.50mtr/1.80mtr length hole with 27mm dia drill bit for anchoring 20/22 mm dia roof bolting ... complete at umaria colliery

Bi-metallic clamp for dtr brass pad 50x50x6mm with 20 mm hole fitted on aluminium portion size 70x40x20mm fixing with 06 no. gi nut and bolt spring and plain washer weight 0.600 gram

Roof bolting in ug by hiring of dgms approved portable hydraulic roof bolting machine with wet drilling arrangement drill 1.50mtr/1.80mtr length hole with 27mm dia drill bit for anchoring 20/22 mm dia roof bolting.... at umaria colliery

Imetallic clamp suitable for ptr flat brass size 60x60x10 mm, central 20 mm hole having a joint aluminum section size 60x70x42 mm with 06 no. gi nut and bolts flat and spring washer, weight 0.900 gram

Bore construction of 150 mm dia bore including or construction of 125 mm dia or including installation of hand pump set complete work for the year 2025-26

Bi-metallic clamp suitable for 315, 200 kva x-mer weight flat brass size 60x60x10 mm. in central 20 mm hole having joint aluminium section size 60x70x42 mm suitable for 150 sq.mm. cable 6 nos. gi nut an bolts flat and spring washer weight 0.900 gram

Proposal for roof bolting by dgms approved portable hydraulic roof bolting machine suitable with wet drilling arrangement to drill 1.5 m long hole in roof having medium to fine grand sand stone strata with 27mm dia drill bit for anchoring of 20/22 mm