Cryptocurrency boom in 2017 attracts lot of people in to Cryptocurrency. BTC hits $ 4000 + & after bitcoin hard fork 2017 Bitcoin cash came in to action and it also touched $ 750 + for some people mining becomes non profitable but for some it becomes profitable than anything else.
Read an interviews conducted by Russian media with several representatives of the country’s bitcoin mining industry
https://news.bitcoin.com/crypto-mining-more-profitable-than-drugs-and-arms-trafficking-in-russia/
