Mining is when people dig deep into the earth to find valuable things like coal, gold and other things. Sometimes, things can go wrong when people are mining and that's when we call it a mining disaster.
When people dig inside the earth, they can come across things like gas or water that can be dangerous. They need to make sure that they are safe and that the place they are working in has no danger.
Sometimes, even if people are very careful, a disaster can happen. For example, there could be an explosion or a collapse of the mine. This can be very scary and dangerous for the people who are working there.
When something really bad happens, like a lot of miners get hurt or even die, we call it a mining disaster. It's a very sad thing because people lose their lives and it can also hurt the families of the miners.
It's important for companies that own mines and the people who work there to always make sure that they are taking care of everything and everyone inside to prevent a mining disaster from happening.