Vintage Workplace safety sign

This is a vintage *workplace safety sign* warning about the dangers of compressed air. You’ll see these in old factories, shipyards, and workshops, usually from the mid-20th These signs were common in the 1940s-1960s before modern OSHA-style safety standards. “Horseplay” with compressed air hoses was a real issue - people would joke around and blow air at each other. The sign is hand-painted on wood/masonite with a yellow ochre background and red/black lettering. That style, plus the phrasing, puts it likely in the UK, Australia, or NZ. The UK’s Factory Inspectorate used similar