[Stoves] How to make smokeless coal?

[neiltm at uwclub.net]

On 26 May 2017 at 12:51, Crispin Pemberton-Pigott wrote:

> Boy Scout Jamborees always include a big conclave around a central fire.
> It is top-lit to prevent (as much) smoke (as possible).

I'm not doubting your personal scouting experience, but I'm not finding 
any evidence for its invariable use at scout jamborees, or in any other 
scouting context.  All youtube videos of jamborees show conventionally 
lit fires, although one is a possible contendor, what do you reckon?:

https://www.youtube.com/watch?v=cFbkkpUyLsc

Neil Taylor