A blasting galvanometer or other instrument designed for testing blasting circuits shall be used to test the following:

(a) In surface operations —   (1) Continuity of each electric detonator in the blasthole prior to stemming and connection to the blasting line;   (2) Resistance of individual series or the resistance of multiple balanced series to be connected in parallel prior to their connection to the blasting line;   (3) Continuity of blasting lines prior to the connection of electric or electronic detonator series; and   (4) Total blasting circuit resistance prior to connection to the power source.

(b) In underground operations —   (1) Continuity of each electric detonator series; and   (2) Continuity of blasting lines prior to the connection of electric or electronic detonators.