Ammonium nitrate. That would do it. https://t.co/lToskgZ2kW

— Jeffrey Lewis (@ArmsControlWonk) August 4, 2020

I think we just saw the answer to that.

— Jag (@RealJag) August 4, 2020

And
3. Both occur. surface area gathers moisture, which causes higher compression/settling. Leaving material closer to the surface less volatile, but causing even greater heating at base., causing even greater volatility

— 𝙒𝘽 𝙔𝙤𝙪𝙣𝙜 🍕🐀😷 (@FormerDirtDart) August 4, 2020

“Highly explosive materials,” seized by the government years ago, were stored where the explosions occurred, said Maj. Gen. Abbas Ibrahim, the head of Lebanon’s general security service, according to the National News Agency https://t.co/SF1NjsLsGF #Beirut

— David Wessel (@davidmwessel) August 4, 2020