I did a bit of that week before last. I forget which entrenching tool I have, but cord wrapped the (steel tube) handle, burnt off the paint then treated as per black iron frying pan.
So far tried bacon, sausages and fry bread at lunch time at work. Previous weekend I did peppered steak (turned out to be a beef pattie thing, soooo disappointed). Works really well. Tempted to swap the cord wrap for a leather cover as the cord slips a fair bit. I'll cheat and glue and stitch it on.
Mike, who is also on here, had his Spetsnaz tool with him. Yes, they work for throwing.
Very cool photo.