Revised Study Contains No Changes to the Economic Returns Forecast for the Elk Creek Project in the Company’s Feasibility Study Filed on August 11, 2017

CENTENNIAL, Colo. (Dec. 15, 2017) – NioCorp Developments Ltd. (“NioCorp” or the “Company”) (TSX: NB, OTCQX: NIOBF, FSE: BR3) announces that, in connection with a review by the Ontario Securities Commission (“OSC”), it has filed a Revised Technical Report (the “Revised Technical Report”) related to the Feasibility Study of the Company’s Elk Creek Superalloy Materials Project (the “Project”) in Nebraska.

The Revised Technical Report, which is available for download on SEDAR and on the Company’s website at, contains no changes to any previously reported numbers or forecasted economic returns of the Project from those contained in the Project Feasibility Study filed on SEDAR on August 11, 2017 (the “August 2017 Feasibility Study”).

At the OSC’s request, the Revised Report provides (1) additional information in Section 19.1.3 on the growth forecast for global scandium markets provided by an independent scandium market expert (OnG Commodities LLC and Dr. Andrew Matheson) and relied upon by the Company in its August 2017 Feasibility Study;  (2) an analysis in Section 22.4 showing Net Present Value and Internal Rate of Return sensitivities of the Project at +/- 30% of the August 2017 Feasibility Study’s assumed product pricing, capital expenditures, and operating costs;  (3) disclosure in Section 3 of the reliance on OnG Commodities LLC and Dr. Matheson; (4) the removal in Section 24 of certain disclosure regarding the Company’s relationship with Dr. Matheson; and (5) inclusion in Section 25 of certain risk factors.

In addition, the Company filed a material change report on November 10, 2017, regarding the June 30, 2017 announcement of the results of the Feasibility Study. This filing remedies the non-filing of a material change report in connection with such announcement.

On Behalf of the Board of Directors,

“Mark Smith”

Mark Smith
Executive Chairman, CEO, and Director

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Source:  NioCorp Developments Ltd.
@NioCorp $NB $NIOBF $BR3 #Niobium #Scandium #ElkCreek

For More Information:  Contact Jim Sims, VP of External Affairs, NioCorp Developments Ltd., 303-503-6203,