Companies that mine for precious metals usually mine for silver amongst others such as gold or palladium. Silver is rare and valuable and is most commonly known for its use in jewelry and coins. However, its primary use is actually for industrial purposes.
Because silver shows the highest electrical conductivity, thermal conductivity, and reflectivity of any metal, it is used in cell phones and solar panels. It also resists corrosion and oxidation and as such serves multiple uses in business.
Companies that mine for silver include SilverCrest Metals, Rusoro Mining, and Tahoe Resources.