N.H. Code Admin. R. Saf-C 1602.22
"Number 8 test blasting cap" means a blasting cap containing 2 grams of a mixture of 80% mercury fulminate and 20% potassium chlorate, or a similar mixture of equivalent strength.
Source. #6054, eff 7-1-95, EXPIRED: 7-1-03 New. #8116, INTERIM, eff 7-14-04, EXPIRES: 1-10-05; ss by #8231, eff 12-20-04; ss by #10396, eff 8-15-13