NONEX / RockJack Pyrotechnic Breaker Capsules ( PBC ) Rock & Concrete Fracturing / Breaking in sensitive and restricted environments.For use in Dimensional stone quarries/Construction & Demolition sitesBoulder Busting / Benching / Trenching / Shaft Sinking / Block -Splitting / Pile Busting / Blasting in close proximity or inside Buildings / Diving applications / Cess pits & Pools / Massed Concrete / Foudations / Thrust walls / Foundation rock and many other applications with very little or no noise / vibration / flyrock / air -overpressure.With none of the problems associated with High Explosives regarding transport /storage / Licenceing. RockJack PBC is classed by the HSE as a :Deflagrating Low Explosives ( sub-sonic / non detonating ) U.N. 0432 Articles Pyrotechnic for Technical Purposes ,Hazard Class 1.4s. Manufacture & Distributor & Service / Training provider