Thanks for setting me straight, good people, your points have been noted. Any road, I know now that I'm one of them 'stupid people'. It's ever so nice to keep track of your station in life. I'm sure that my to-ing and fro-ing would be easier if I had a good staff but continual ups and downs and constant changes confuse me no end. One of my relatives keeps telling me "get a grip, Dujon". To that end I have bought myself a sand box. If it doesn't work as planned then at least I can stick my head in it.
[Chalky] 'Morning. The 'sand box', and I'm sure that Rosie and others can explain it better than I, is a box full of sand or grit of some kind or other. In olden days steam engines used the contents of such, as and when necessary, to increase the friction between wheels and rails. This was effected by dribbling the contents of the sand box onto the rails in front or over the driving wheels. Naturally (and obviously) you are far too young to have seen or heard this highly technological process in action.
(Dujon) Ah! Things are now clearer because I didn't know you drove a steam engine. Even I don't do that. Sand is useful and may have prevented this, the slip to end all slips. Click on the bottom recording, marked "60532". The quality is rather poor. The loco slips a bit on starting (quite usual) but the mayhem begins after 1m 50s. After another 15 seconds or so you can hear the water being carried over to the cylinders, which caused the real damage. All 3 connecting rods and the coupling rods and valve gear were bent so that was the end of that little day out. Why didn't the driver just shut off steam? He couldn't. The big handle wouldn't move against the huge volume of steam and water going through the main valve. He had about one second and missed it. No more driving for him, at least of that loco, which cost £80,000 to repair.