Fastening of the obligatory types of rods in the boreholes is carried out by wedging of the lock parts. Expansion of the lock requires mechanical efforts, and sufficient fixation of the lock in the rocks is not always possible.
How to cite:
Demetriades G.K., Yassievich G.N. New type of rod lock // Journal of Mining Institute. 1959. Vol. 42. Iss. 1. p. 130-132.
