Cross-referencing the UN dangerous goods numbers on the other barrels, we have dinitrogen tetraoxide/NTO (1067), methylhydrazine (1244), anhydrous hydrazine (2029), and red fuming nitric acid (2032). I don't know what the containers without UN numbers would be but I hope none of them are UDMH or the Stoff mixtures...
Of ALL the things I've seen in this place, I've never expected to find a reference to John Clark's Ignition!, probably his most famous non-fiction work.
Read it, it owns, it will blow things other than your mind... and remind you to NEVER pursue a career dealing with all those wonderful chemicals depicted on this post :)