There were some old chemical jars in the basement with their labels off. They sent the robot down to check them out. Most were harmless, lab grade table salt and sucrose, but there was one jug of cyanide. 140 year old house, stuff accumulates. Really, it was an excuse for them to play with the robot. Considering it was Saturday night till about noon on Sunday, I guess there was at least 5 grand an hour of overtime ticking away at the peak.

Oh, and to answer your actual question, I did a Google image search for Haz Mat robot, and I can't tell which it was, they all look alike.
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"Guage once told me that there is nothing worse than eaten ass of a black dude thats been huffen drain cleaner the night befor." - delanoojos