NioCorp Developments Ltd. announced the appointment of Nilsa Guerrero-Mahon, CPA & CFE, of Denver, Colorado, to the company's Board of Directors. A former Chief Financial Officer and Controller for global corporations in the technology, energy, and government sectors, Mrs. Guerrero-Mahon currently serves as the Vice Chair of the Board of Directors of Centura Health Mountains & North Denver Operating Group Previously, she served as the Vice Chair of the Board of Directors and Chaired the Strategy Committee at St. Anthony Hospital, now a member of the Centura Health Mountains & North Denver Operating Group.