Combination Levels News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Desperate effort to search for survivors. >> reporter: it has been a tough day for the rescuers and an even tougher one for the waiting families. knowing that the team sent into the mine this morning got within 500 feet of the rescue chamber where the missing miners might have been able to survive if they made it that far. dangerous combination levels of methane, hydrogen and carbon monoxide drove the rescue teams out. setting the effort back by hours. until crews could drill another larger hole in the mine that will help the poisonous gases escape more quickly. and rescuers hope allow the tea...

Desperate effort to search for survivors. >> reporter: it has been a tough day for the rescuers and an even tougher one for the waiting families. knowing that the team sent into the mine this morning got within 500 feet of the rescue chamber where the missing miners might have been able to survive if they made it that far. dangerous combination levels of methane, hydrogen and carbon monoxide drove the rescue teams out. setting the effort back by hours. until crews could drill another larger hole in the mine that will help the poisonous gases escape more quickly. and rescuers hope allow the tea...