In the case of a copper mine, the extraction period or life span typically ranges from 5 to 70 years. Other mines, such as diamond mines or nickel mines, have a significantly shorter mining life of about 27 and 22 years respectively. Good machines operating in well-managed facilities can last for many years. The average life of a machine is typically three to five years, although it is not uncommon for it to last longer.
Newer models are expected to have a service life of at least five years. And if I make a profit, even if it's not huge, why not, as long as it covers the cost of the electricity it uses, as well as the extra parts I've bought for the experiment. The moment mining is more expensive than buying the cryptocurrency, I will stop doing it. The average life expectancy in coal mines for those who start working at 15 is 58.91 years and 49.23 years for surface and underground workers, respectively.
However, the lifespan of the average mine production is much shorter than the timescales of mineral deposit formation, suggesting that metal mining is unsustainable on human timescales.