Methane Detector News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Gas detectors are typically in stores next to smoke detectors and carbon monoxide detectors, and Good Housekeeping has dug deep into which works best.

Detectors meant to protect workers from explosive methane gas may have been disabled intentionally. here's nbc's tom costello. >> reporter: it was february 13th, two months before 29 miners died at the upper big branch mine in west virginia when something happened at the mine that scared ricky lee campbell. what authorities say could have been criminal tamp weering with methane gas detector in a mine where explosive gas has emerged as a real concern. >> i witnessed a electrician bypassing a methane detector on the machines. >> reporter: the machines that cut coal? >> yes, sir. >> reporter: why...

>> he didn't want to do it, he knew the danger. but when somebody above you is telling you what to do, you're going to do what they say. >> reporter: the mine operator, massey energy, says it was an isolated incident, but tells nbc news, "the methane monitor was bypassed in order to move the miner, the machine, from the area that did not have roof support to a safer area for repair." not so, says campbell. >> we kept using it. >> reporter: you kept cutting coal? >> yes, sir. >> reporter: without the methane detector? >> yes, sir. >> reporter: federal investigators say they've heard the allegat...