Officials at Molycorp Inc. announced that U.S. Securities and Exchange Commission (SEC) regulators have completed a company investigation into public disclosures with no action recommendations; the probe of the rare earth developer dates back to Q3 2012.

Based in Colorado, Molycorp is the world’s sole advanced material manufacturer controlling a world-class rare earth resource while producing high-purity rare earth products from 13 different rare earths, five rare metals and the transition metals yttrium and zirconium. With 27 locations across 11 countries, Molycorp also produces rare earth magnetic materials through its Molycorp Magnequench subsidiary, including neodymium-iron-boron magnet powders.