Thaaaaat seems unlikely to be the thought that finishes this dilemma.
He has not, for one thing, asked, except of that paladin, on a much more grand and impractical scale of explosions that seemed safely nonthreatening to his real life.
And for another thing, explosives shouldn't be very hard at this level of chemical expertise, compared to mining spellsilver.
And for another nother thing, back in dath ilan, if he'd come across an internally inconsistent thought like 'It's okay to mine spellsilver for my apparent hosts but not to build weapons for them', he would have considered that as a big deal, and tried to resolve it. He somewhat got out of that habit due to Golarion making him be totally incoherent all of the time. But things are settling down now, he is not having a new terrible epiphany every four hours, and he can afford to maybe start being a little coherent, again.