OK, so there must be some serious idiots out there for me to have received a thing in the mail from the gas company.
Apparently you shouldn't jackhammer near gas lines, look for gas leaks with an open flame or attempt to open up your gas meter at any time.
Really? They need to explicitly tell you that these things aren't good ideas? So what I'm guessing is that some serious mouthbreathers out there done won themselves some Darwin awards and because of the lawsuits that followed (even dumber!), their attorneys thought it would be best to insult the intelligence of everyone else who isn't already dead.
Screw them. I have things to do, like stare at the sun with a telescope, remove earwax with an icepick, and give myself a cool Mike Tyson tattoo with a rusty guitar string in a fountain pen.