You bloody little Anzac, you beauty! :beerbang:
I'd be removing those vessel to the safety of your car asap, then home right away. I'm sure it would be an OH&S issue to leave them at work because those are too heavy to lift (lifting injury), they are a trip hazard and could quite possibly be filled with dangerous chemicals so it's your duty and obligation to doing the right thing by removing them from the workplace.
Nice one anyway.
By the way, what's in them? I have seen those small kegs in science labs as yeast and bacterial growth reactors, and also in filtering apparatus. Do you work in a lab? Don't want to be the downer here but they just "may" have had nasties in them. New seals, plenty of caustic and you should be right though. ??
Edit: You answered the lab question while I was writing my post. Might want to make sure of exactly what was in them. I'd have to be cautious, we use some pretty nasty stuff.