According to Mining News Pro - Therefore, the Russian company JSC had to stop the ferroalloy processing of Serov Ferroalloys Works because of a breach of the safety regulations.
Following a Carrier Operator Center, the company faced in June inspections that saw 26 violations of industrial safety requirements following inspections.
http://www.miningnewspro.com/en/News/255161/Stopping a ferroalloy unit in Russia due to a breach of safety regulations