The contributors review the peculiarities of modelling the labour regimen for the vibration-affected professions in the North-West, based on the dosage-related approach, inasmuch as the existing techniques of ore deposits elaboration (chamber-long face and magnification of ore), and the organization of pit works on cyclogrammes, did not allow a practical application of the labour regimen recommendations proposed by the USSR Ministry of Health.
The article contains a review of published data on the biologic action of sodium and calcium chlorides on man and animals, and the parameters of this action. These substances have been proposed by some institutions for dusting in transpolar coal mines.
Results of field physiologic and hygienic investigations of borer's work schedule during the subterranean gold extraction in the Chukot Range [correction of Chukotka] are presented. Methods and models of rational work schedule in conditions of the extreme north are suggested based on the dose approach.