1). Mining mental ores is unsustainable, as the amount of metals present on Earth is fixed. However, metals recycled and reused provide new opportunities for their use without having to mine and refine more of it.
2). Issues associated with mining can be avoided, like acid mine drainage.
3). Recycling scrap metal reduces the amount of greenhouse gas emissions produced during smelting and processing operations used from mining.
4). Compared to mining, recycling metals removes the dangers of mine tailings contaminating air, soil, and water.