And then go out on the field, run as fast as you can towards the snake and then throw yourself and the bottle at the floorBottle pointing down, guages away from yours and others face, keeping it all at arms length, so your not looking down onto the fill rig or your setup. If marker attached, exactly the same procedure.
Still makes me wink at my seat when I am stood next to someone who is also filling and does the exact opposite of what is considered safe!
That adapter has sheared off at the base of the tank thread - it looks like there's a short section which was threaded both inside and out, leaving it with a dangerously thin wall section. It the adapter had been made a few mm longer then the weak point could have been avoided.it's mentioned that an adaptor was used to fit the current sized reg into the larger older threaded bottle. If i remember right the older bottle's thread is 18mm with a fine pitch, and the current bottles are 5/8 unf (16mm). There's not a lot of difference between them to fit an adaptor.