I was thinking &#x27;drop yellow sulfur over the floor&#x27; as I read the first paragraph and when the fire officers arrived. As I read the rest of the article and found the section that describes the source and progress of the spill, I realised that a more radical cleanup would be needed.<p>I&#x27;m in my late 50s and we used to use mercury liberally at school and after. I&#x27;m talking half a gallon of the stuff to demostrate the Toricelli vacuum, and later at University for floating bearings. Always dirty on surface, so low vapour. Bucket of sulfur in the lab. I&#x27;m not recommending a return to those days (benzene, carbon-tet, acetone on tap &amp;c).