NioCorp mines small amount of commercial-grade niobium
![NioCorp mines small amount of commercial-grade niobium](http://bloximages.chicago2.vip.townnews.com/journalstar.com/content/tncms/assets/v3/editorial/f/45/f45a3378-7f7c-5b13-9427-44764fab851f/55fadde633605.image.jpg?resize=300%2C200)
NioCorp Developments Ltd. says it has mined a small amount of commercial-grade niobium at a site near Elk Creek in Johnson County.
NioCorp Developments Ltd. says it has mined a small amount of commercial-grade niobium at a site near Elk Creek in Johnson County.