... drilling rig to enter. 1.1 rig census for exploration, geophysical exploration, exploration as well as building ... of diamond, alloy, Steel and steel drill bit for drilling, such as tablets. 1.3 drillability ... rated. Rated hole diameter of 110mm, allowing for the largest hole diameter 150mm. 2.1 with ... . 2.5 structure, drilling rigs, pumps and diesel engines are installed in the same base, occupied by the ...