I guess the thinking was more based on prevention than 'directional containment'.
It looks like brass was used for metalwork [less likely to spark], and the explosives and detonators were carried separately. I think some of the original explosives were pretty unstable, whereas I believe gunpowder needed more 'ignition'.
It looks like brass was used for metalwork [less likely to spark], and the explosives and detonators were carried separately. I think some of the original explosives were pretty unstable, whereas I believe gunpowder needed more 'ignition'.