Valentine Gold Project

Calibre Mining Corp. is proposing the construction, operation, decommissioning, and reclamation of an open-pit gold mine located at Valentine Lake, approximately 55 kilometres southwest of Millertown in Newfoundland and Labrador. As proposed, the Valentine Gold Project would include two open pits, disposal piles, crushing and stockpiling areas, site infrastructure, a tailings management facility, and mine site haul and access roads. Production capacity is estimated at 10,960 tonnes per day of high- and low-grade ore, with an operation life of 13 years.


Please note that the proponent was formerly known as Marathon Gold Corporation.


Latest update

March 19, 2024 — The public comment period on the draft amendments to the decision statement closed on March 18, 2024. The Impact Assessment Agency of Canada is considering comments received. The Minister of Environment and Climate Change will issue the proponent an amended impact assessment Decision Statement with reasons and enforceable conditions, should the revised project be allowed to proceed.


Key documents

Key documents
Document Number Document Title File Date
82 Amended Decision Statement PDF (364 KB) May 25, 2023
77 Environmental Assessment Decision Statement PDF (787 KB) August 23, 2022
75 Environmental Assessment Report PDF (7.8 MB) August 23, 2022
68 Public Notice - Public Comments Invited on the draft Environmental Assessment Report and Potential Conditions - May 25, 2022
67 Potential Environmental Assessment Conditions PDF (596 KB) May 25, 2022
66 Draft Environmental Assessment Report PDF (7.7 MB) May 25, 2022
10 Final Environmental Impact Statement Guidelines PDF (1.3 MB) July 17, 2019
6 Notice of Commencement of an Environmental Assessment - May 31, 2019
5 Notice of Environmental Assessment Determination - May 31, 2019
3 Summary of a Project Description of a Designated Project PDF (10.1 MB) April 5, 2019


Compliance Promotion & Follow-up Team
Impact Assessment Agency of Canada
160 Elgin Street, 22nd Floor
Ottawa, Ontario K1A 0H3

Impact Assessment Agency of Canada
160 Elgin Street, 22nd Floor
Ottawa, Ontario K1A 0H3
Telephone: 613-957-0700 or 1-866-582-1884
Fax: 613-957-0862

  • Location

    • Valentine Lake (Newfoundland and Labrador)
  • Nature of Activity

    • Mines and Minerals
  • Assessment Status

  • Start Date

  • Proponent

    Calibre Mining Corp. (formerly Marathon Gold Corporation)
  • Authorities

    • Impact Assessment Agency of Canada
  • Assessment Type

    Environmental assessment under CEAA 2012
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.

Nearby assessments

...within 200 kilometres
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