42 Blast design services, namely, designing the pattern, loading and detonation timing of explosive charges, namely, shells, powders, signals, caps and primers; manufacturing services, namely, custom design of electronic detonators for explosives, namely, shells, powders, signals, caps and primers, all used in the mining industry on behalf of others; consultation services, namely, the selection, checking, inspection and supervision of use of explosives, namely, shells, powders, signals, caps and primers, all used by third parties in the mining industry