Many years ago, I got roped into helping a friend build a big box which was to be filled with heather to take the stink out of a sewage works. the box was made of GRP panels about 5 foot square that bolted together. The box was one panel high and 8 or 10 panels along each side, because we were constructing it was a construction site and had to wear hard hats, which is fair, but we had to wear high vis as we might get run over in the middle of a maze of pipes and little huts we struggled to walk through. As soon as we got a corner built it became a confined space so we had to harness up. I asked i I could take off the high vis as there was no danger of getting run over inside a confined space and was asked to leave...