Not "me". US Government. Civil, under ICC authority in that era. Mine at the time, LG Cassidy, Chief of Engineers via 'strong dotted line" if local brass chose to challenge it. Compressed gas safety regs are in USACE portfolio - 3rd and 4th Corps Tactical Zone, USARV my specific "reach".
ID rings - or valve replacement and such are meant
to be dealt with by those trained for it. Only. At the time, Belvoir could generate a Lootenant of Engineers in 21 weeks. Cryogenics tech, Corp of Engineers took longer. 26 weeks, and the intake had to have near-as-dammit the same tested IQ. 90th percentile or above. Several of my team had already earned Master's Degrees in various Engineering Disciplines. Others had been commercial HVAC techs. Or driven coal trucks in Appalachia.
Funny part is the lootenant left active duty with the simple "civilian equivalent occupation code" of "blaster".
The SP4/SP5 Oxy/Acetylene/CO2 guys had a much better crack at a good job with the industrial gas companies!
Providing.. the even BETTER trained US Navy or USAF "Base Fuels" veterans hadn't gotten all the best jobs, first!