For coal to become an ember, you have to light it first ! Then let it die down quite a bitmickthemaverick wrote: 21 Jul 2020, 21:36 Philosophical question.... when does a coal become an ember and when does an ember become a clinker?
An ember becomes clinker when you can pick it up with bare hands and not go 'Gosh darn it, that was hot'.
If the firebox is at a temperature lower than its normal working temperature to sustain steam, clinker will form on the firebars. Clinker is a hard deposit that occurred when ash and sulphur fused together and removal usually meant chipping off with a long poker.
NewcastleFalcon wrote: 22 Jul 2020, 18:27 Anyone got a photograph of a railway bridge, with the Engineers Line Reference and the Bridge Number clearly shown for anywhere other than the East Coast Mainline
REgards Neil
I have come to the conclusion that Network Rail do not maintain that Bridge....why? Because I suspect it is on a railway which has been closed for many yearsbobins wrote: 22 Jul 2020, 21:12 Right county (but only just by the skin of your teeth), but wrong bridge by a country mile
There's only a handful of bridges along that stretch, so shouldn't take you too long on Google Streetview 
bobins wrote: 22 Jul 2020, 22:03 You never said it had to be a maintained bridge
Yep - it's somewhere between Midhurst and Pulborough. Somewhere
Top tip, that would have made things much easier (Once the devious question setting had been rumbled of coursebobins wrote: 23 Jul 2020, 06:50 May I suggest, in future, you use something like https://www.bing.com/maps/ to get close to the desired area then use the drop-down to select Ordnance Survey maps - you get a much wider coverage.
but the challenge did make it more interesting so well done!) 
