Kerosene + Used Charcoal + Dumpster = Bad

I was walking down the street this evening when I noticed that a dumpster next to the chemistry building was on fire. I ran inside and got someone to call 911, then pulled the fire alarm, then hunted down a fire extinguisher. Thankfully someone came on the scene who knew how to use the fire extinguisher I found. It wasn't sufficient to put it out though, only to keep it under control. It ran out of ammo surprisingly fast. After it ran out we each ran inside and grabbed another, but even two extinguishers at the same time weren't enough, and we had to wait for the firemen. The firemen put it out, and after some time they fished out a can of kerosene (Or some other type of cooking fuel). Some people had been holding a cookout earlier that day, so the current theory is they threw that away in the dumpster along with some used charcoal.