It seems they are giving up on the rescue. I can understand why they wouldn't want to risk more lives when they are not sure if the miners are even still alive or where they are. That must be a difficult decision. I don't really understand why they don't know where the miners were working. Do they not organise the workplace in mines? They don't have set shifts? They don't know where the coal is? And even with all that...are there not walkie talkie/GPS/radios that will work underground? Even for a limited distance? Seems to me like there should be something that would at least work in the tunnels. So they would know where the miners are if nothing else. Is this too expensive? Did no one think about it? Have they tried?

Someone please explain this to me. Thanks.