How do you think Nevill acquired his burns?
Or do you agree with Cambridgecutie that they are not burns?
As in previous posts I very much doubt they were caused by AGA handle and catch, and we don't even know if it was lit on full blast or dampened down overnight, unless there are unseen documents which reveal more.
The burns imo are the result of instantaneous heat as one might expect with "branding" using something red/white-hot applied for only seconds, eg. cigar, cigarette, poker, or something else (inserted into the fire thro' the hotplate plug-hole?), rather than prolonged contact with anything at a lower temperature.
Vanezis suggested to CAL they were
recent burns which could even occur through a material (NB's pyjama top) without affecting it, although the loose fitting collar could just as easily have been pulled back slightly to reveal the nape and apply heat when his head was resting in the fuel hod. So I'm not swayed by my doppelganger's view they were remnants of a spinal operation during or after WWII.
Contact with hot farm machinery earlier in the day?
I once thought a stray or deflected red-hot brass casing (the 4th missing one?) was a possibility, lost when the body was removed to the mortuary, but the Eley.22 casing size compared with the burns is different, so maybe that's a blind alley too.
https://www.youtube.com/watch?v=WxQXBueF4Bchttps://www.youtube.com/watch?v=npzUrS-sz-4I guess we'll never know, unless the culprit reveals all.