BK11-VC (VK11VK)
To equip mining tools: roller cone drill exploration, operational and blasting holes and wells in viscous, medium-hard and hard abrasive rocks with factor of a fortress on a scale Protodjakonova f = 10.
To equip mining tools: roller cone drill exploration, operational and blasting holes and wells in viscous, medium-hard and hard abrasive rocks with factor of a fortress on a scale Protodjakonova f = 10.