Two hapless underground miners come upon a dead canary and one says to the other, "This means something, but I can't remember what!"

Here we see a few of the Seven Dwarfs at their diamond mine in front of a sign requiring personal protective equipment.  One of them defiantly proclaims, "She's gone too far this time!"

When caught in the act of catapulting a worker to a higher level of the plant, the supervisor asks, "How many times do I have to tell you guys to use the aerial lift?"

Looking up a the vulture perched overhead, one workman says to the other, "I reckon everybody knows about this company's poor safety record by now!"

Here we see a nonchalant workman giving the safety boss the business when asked, "Have you given any thoughts to my safety recommendations?"

In what may be the first instance of PPE, this caveman confronts his hardhat wearing mate and inquires, "What the heck is THAT?"

Riddled with nails, the victimized employee approaches the safety boss and asks, "Who taught the new guy how to use the Brad Nail Gun?"

During their dinner break perched on a beam above, one says to the other, "He won't get off your back until he's sure you know everything about safety!"

Responding to the driver's complaint about his vision, the passenger says, "There's nothing wrong with your eyesight.  You're wearing your seatbelt too high!

Speaking to room full of bandaged executives of Acme Safety Equipment about their declining performance, the CEO asks, "Well gentlemen, any suggestions?"