(Is it bad that I had to sing the beginning of Safety Dance in my head to check I had spelled 'safety' correctly?)

There are some workmen doing some minor renovations on the school grounds at the moment. I just walked past them on my way back from the kindergaten building to my office. I'm not sure exactly what they are doing but it is noisy and involves flying sparks and clouds of dust and that kind of thing. 

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Let's take a closer look at that picture shall we?

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This guy, who I think might be welding, is wearing a mask fashioned out of a ripped piece of cardboard and a pair of sunglasses.
Awesome.