During 1983 and 1984, there were leaks of MIC, chlorine, monomethylamine, phosgene, and carbon tetrachloride, sometimes in combination.
Selama tahun 1983 dan 1984, terdapat kebocoran MIC, klorin, monometilamina, fosgen, dan karbon tetraklorida, terkadang terjadi kebocoran lebih dari satu diantaranya.