sentences:  Until then, only nitroglycerin-based explosives were commercially feasible for blasters who wanted cap-sensitive explosives that could be initiated with a #6 blasting cap in bore holes as small as 3/4 of an inch in diameter, sometimes less.The new Tovex satisfied that requirement.Atlas, Hercules, IRECO, Trojan-US Powder and several other explosives manufacturing firms of the era created emulsions, gels and slurries which accomplished the same end, but it was the DuPont patent of PR-M based explosives () that gave the DuPont Company a competitive edge.