I've been looking at pics of engines for most of the day and been amazed at the size of the lumps of coal carried in some tenders (GWR). I'd always believed that they used lumps not to much bigger than the stuff we used to put on the fire at home, but some of the lumps on the tenders were closer to "rockery" size. I presume that the fireman had to beak these up whilst the engine was under way.
Was this usual practice or simply another case of "There's one way and then there's the Swindon way".