[Hygienic and ergonomic analysis of the technology for sinking main and subsidiary mine shafts]. / Gigienicheskii i érgonomicheskii analiz tekhnologii prokhodki vyrabotok osnovnogo i malogo secheniia.

The labour conditions in mine shafts do not correspond to the existing ergonomic and hygienic norms. Drilling and blasting techniques are most hazardous as to the gravity and duration of the factors involved. Working conditions normalization should be based on the elaboration of specifically innovative technologies which should envisage the workers' periodic staying in the mine shaft area during the work shift.