The process you are describing sounds like mining, specifically coal mining. Mining can harm the environment in several ways, including the release of radioactive materials and toxic minerals into the air. Additionally, mining activities can produce toxic liquid mixtures known as acid mine drainage, which often contains heavy metals and other pollutants, leading to soil erosion and water pollution.
To summarize:
- Mining involves extracting minerals such as coal.
- It harms the environment by releasing radioactive materials and toxic minerals into the air.
- It produces toxic liquid mixtures called acid mine drainage.