How does coal mining cause pollution?

There are many aspects of pollution caused by mining. Isn't green mining advocated now? Generally speaking, pollution is the ground subsidence caused by coal mine goaf, and the groundwater level drops sharply. The medium produced by mining will produce a lot of waste residue and wastewater after washing, which will occupy cultivated land and pollute the mining environment. Moreover, there are many large-scale transportation equipment around the coal mine, either railways or cars, which will produce a lot of dust and pollute the environment! Of course, the most important thing is that the newly released medium will produce a lot of harmful gases during power generation, polluting the atmosphere! I hope it helps you!