wow, its funny how someone can take two completely unrelated events and try to act like the fact they turned out differently is an indication of larger problems. Now, i'll admit i know nothing about mining, nor do I care, but looking at 1 mine disaster in the US and 1 in Canada doesn't tell you anything. I'm sure many Canadian miners die in accidents every year too, before you go blamming anyone, at least try to look at the national statistics. Also, as has been stated before, safe rooms and oxygen only help if you can get to them. If a cave-in occurs between you and the safe room then you are still screwed. Again, I'm not sure about the exact laws governing mining in each country, but i'd say its likely that reasonable saftey measures are in place in both countires to try to avoid as many deaths as possible, but sh|t can still happen.
I'm sure everyone here realise this, but i'll just restate it. There are only limited resources available to people, and we cannot prevent all deaths. Therefore, it is not a heartless or immoral action to not include excessivve saftey devices in a mine like this. The government mandates certain essential saftey precautions, but if even more was required people would still die, but more resources would be used to impliment these precations. These resources have to come from somewhere. Perhaps it means that power plants impliment less saftey precautions to keep the energy prices the same ince fuel is now more expensive. IF not then energy prices go up and less people can afford to cool their houses, and then more people die of heatsrtoke. The point is that accidents will happen in mines so long as people work in them. And, while it is nescecarry for mining companies (or any other company for that matter) to try to protect their employees, they can only go so far due to a lack of resorces.