Vancouver, British Columbia – March 11, 2015 – NioCorp Developments Ltd. (“NioCorp” or the “Company”) [TSX: NB; OTCQX: NIOBF; and FSE: BR3] On behalf of our shareholders, NioCorp is pleased to announce the filing of an updated NI43-101 resource report for the Elk Creek niobium, scandium and titanium deposit (the “Deposit“).  A summary of the resource report is contained in the Company’s news release dated February 23, 2015, and the full report will be available on SEDAR and the Company’s website www.niocorp.com shortly.

Following the listing of the Company’s shares for trading on the Toronto Stock Exchange (“TSX”), effective March 9, 2015, the Company is pleased to report that Mark Smith, Executive Chairman and CEO, and Peter Dickie, President of NioCorp, opened the market at the official listing ceremony the morning of March 11, 2015.  A video clip of the ceremony will be available shortly on the Company’s website. (https://www.youtube.com/user/TMXGroup)

Following the TSX opening bell ceremony, Mark Smith was invited to a live interview on BNN.  The interview can be seen at (http://www.bnn.ca/Shows/Commodities.aspx).

Mr. Smith commented “we are tremendously proud of the hard work and dedication shown by our staff and affiliates in achieving these significant milestones.  We remain confident that the continued progress of our technical work programs at the Elk Creek deposit is the most effective way to create long term shareholder value.”

About the Company:  NioCorp is developing the only primary niobium deposit known to be under development in the U.S., and the highest grade undeveloped niobium deposit in North America, located near Elk Creek, Nebraska.  The Company is announcing an NI43-101 compliant resource with an effective date of February 20, 2015 reporting an Indicated Resource of 80.5 million tonnes grading 0.71% Nb2O5, 2.68% TiO2 and 72 ppm Sc and an Inferred Resource of 99.6 million tonnes grading 0.56% Nb2O5, 2.31% TiO2 and 63 ppm Sc (at a 0.3% Nb2O5 cutoff grade).  Niobium is mainly used in the form of Ferro-Niobium to produce HSLA (High Strength, Low Alloy) steel, which is a lighter, stronger steel used in automotive, structural and pipeline applications.  The U.S. imports 100% of its niobium needs.  Titanium in the form of an oxide is used extensively as a pigment in paints, plastics and papers.  As a metal, titanium is used in aerospace applications, armor, chemical processing applications, marine hardware applications, medical implants, power generation and in sporting goods. Scandium is used in solid oxide fuel cells (SOFCs) and aluminum-scandium alloys, as well as in ceramics, electronics, lasers and lighting applications.

For further information, contact the Company at (604) 568-7365 or via email at [email protected].

ON BEHALF OF THE BOARD

“Peter Dickie”
Peter Dickie, Director, President and Corporate Secretary

Neither the TSX nor its Regulation Services Provider (as that term is defined in the policies of the TSX) accepts responsibility for the adequacy or accuracy of this release.