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- S-3 Shelf registration
- 5.1 Opinion of Blake, Cassels & Graydon LLP
- 23.2 Consent of Bdo USA, LLP
- 23.3 Consent of Marcum LLP
- 23.4 Consent of Dahrouge Geological Consulting USA LTD.
- 23.5 Consent of Understood Mineral Resources LTD.
- 23.6 Consent of Optimize Group Inc.
- 23.7 Consent of Tetra Tech
- 23.8 Consent of Adrian Brown Consultants Inc.
- 23.9 Consent of Magemi Mining Inc.
- 23.10 Consent of L3 Process Development
- 23.11 Consent of Olsson
- 23.12 Consent of A2GC
- 23.13 Consent of Metallurgy Concept Solutions
- 23.14 Consent of Scott Honan, M.SC., Sme-rm, Niocorp
- 23.15 Consent of Everett Bird, P.e., Cementation
- 23.16 Consent of Matt Hales, P.e., Cementation
- 23.17 Consent of Mahmood Khwaja, P.e., CDM Smith
- 23.18 Consent of Martin Lepage, P.eng., Ing., Cementation
- 23.19 Consent of Wynand Marx, M.eng., Bbe Consulting
- EX-FILING FEES Ex-filing Fees
- 5 May 23 EFFECT Notice of effectiveness
- 4 May 23 424B3 Prospectus supplement
- 12 Apr 23 S-3/A Shelf registration (amended)
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14 Mar 23 S-3 Shelf registration
Exhibit 23.3
Independent Registered Public Accounting Firm’s Consent
We consent to the incorporation by reference in this Registration Statement of NioCorp Developments Ltd. on Form S-3 of our report dated February 23, 2023 which includes an explanatory paragraph as to GX Acquisition Corp. II’s ability to continue as a going concern with respect to our audits of the financial statements of GX Acquisition Corp. II as of December 31, 2022 and 2021 and for the years ended December 31, 2022 and 2021 appearing in the Current Report on Form 8-K of NioCorp Developments Ltd. filed with the Securities and Exchange Commission on March 1, 2023.
We also consent to the reference to our firm under the heading “Experts” in the Prospectus, which is part of this Registration Statement.
/s/ Marcum llp
Marcum llp
New York, New York
March 14, 2023