AutoStem technology is a revolutionary new blasting cartridge which contains an automatically acting self-stemming element wi ... thin. This unique feature totally eliminates conventional stemming operations. It is also the safest blasting cartridge in the world with a built in safety switch. Energy content is factory controlled. AutoStem can be manufactured to be up to x2 as strong as conventional explosives, without compromising on any safety aspects. AutoStem is available in Canada read more