Who, Me? The office sink is always a horror. Managers worried this one glowed WHO, ME?  Welcome to a fresh, tasty, instalment of Who, Me? It’s The Register ’s reader-contributed column in which readers confess about things they did at work that probably deserve to remain a secret. This week, meet a reader we’ll Regomize as “Ray” who told us he once worked in a research lab repairing nucleonic instruments. We understand they’re gadgets that use very short half-life isotopes that emit just enough radiation it’s possible to measure the backscatter. According to the World Nuclear Association this is helpful to measure the level of coal in a hopper, or the thickness of paper! Like many workplaces, the lab Ray worked in had a microwave oven staff could use to warm their lunches, and a coffee machine too. The difference in this lab was that the appliances lived next to a sink used to wash the nucleonic kit.…