Rare earth supply security is one of the biggest product development planning challenges for permanent magnet based products. Recycling is one of the potentially significant sources of supply that is being pursued to address supply security. Many different approaches and recycling systems need to be developed in order to increase the amount of rare earths that can be obtained from recycled sources. In developing the refining process for our future rare earth mine in Strange Lake in Québec Canada, we determined that our refining process can handle recycled feed stocks as well as mined feed stock. Our patented refining process called Selective Thermal Sulphation (STS) can readily handle large amounts of metals and minerals, without impacting the economic extraction of rare earths. We have already successfully pilot tested our STS process on recycled florescent lamp feed stock and assessed the potential to use other recycled sources such as permanent magnet electric vehicle motors. This presentation will review the potential for recycled and mined sources to increase rare earth supply security.