It was somewhere outside Barstow when "dj" wrote:

Anyone know of a suitable burner for use under charcoal.

For lighting charcoal I use whatever gas torch I have nearest to hand.
A quick blast of hand-held propane lights anything in a minute, then
leave it for 20 minutes to burn through.

Or if you're in a hurry I use the gas welding set. Pure oxygen (gas,
I'm not George Goble!) will burn charcoal to cookable grey in a couple
of minutes.

Faffing around installing a burner beneath things sounds like a lot
of effort.