Y'know, randjack, that makes sense. If you can make a light that will withstand multiple atmospheres of pressure and keep all that high pressure water out of your light, it should be able to isolate any electrical connections from any natural gas floating around in the air. I'm not sure if there's more to making a safe flashlight for hazardous environments than that single point, but I did look up your Browning light on the Pelican website. If it's the Pelican Super Sabrelite 2000 then it is indeed Class I, Div 1, Group C,D approved (e.g. natural gas environment) so it seems that you're GTG in the next big earthquake. <img src="/images/graemlins/smile.gif" alt="" />