Present Situation and Trend in Swedish Mining
S. G. BERGDAHL; I. JANELID
Underground mining in Sweden is today characterized by mechanization and automation, owing to the rising cost of labour. Drilling in drifts and tunnels is still essentially done with jackleg drills, but rigs which make it possible for one man to operate two or more drills are now frequently used. Large jumbos for longhole drilling, with two drills operated by one man, are used, especially in sub-level caving.
blasting, Caving, caving, hard rock, Kiruna, Malmberget, Royal Institute of Technology, Drill, Drilling, Drills, Equipment, Mine, mining