Rare earths play a vital role in powering clean energy and the manufacturing of high technology solutions. Belonging to the lanthanide series of elements on the periodic table, most of these were discovered in the last 120 years. Rare earths are broadly divided in to light and heavy. This distinction is important as each varies greatly in terms of natural occurrence, end-use applications and supply/demand drivers. The Browns Range Project is abundant in heavy rare earths, in particular the high value element of dysprosium.