Has there been a study of other tailings done by companies who are looking at rare earths? Or are mining operations who aren't in the business of rare earths looking at possibly refining from their tailings? I don't think I really got an answer to that part of the question.
Evidence of meeting #6 for Natural Resources in the 41st Parliament, 2nd Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was chairman.
A recording is available from Parliament.