забой ствола шахты("One of the key benefits of the Herrenknecht SBR design is that, during excavation, no personnel are required on the shaft bench because the system is remotely operated from work decks above the cutting head."miningweekly.comAiduza)
забой ствола("One of the key benefits of the Herrenknecht SBR design is that, during excavation, no personnel are required on the shaft bench because the system is remotely operated from work decks above the cutting head."miningweekly.comAiduza)
забой("One of the key benefits of the Herrenknecht SBR design is that, during excavation, no personnel are required on the shaft bench because the system is remotely operated from work decks above the cutting head."miningweekly.comAiduza)