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408 Sylvia Lake Road, Gouverneur, NY 13642

The Empire State Mine (“ESM”) is an underground zinc mine located in Fowler, New York, near the town of Gouverneur. ESM is comprised of a group of high-grade mines: ESM #4 mine which is in production and six historic mines.


ESM #4 mine restarted mining operations in January 2018 and began producing zinc concentrate in March 2018. The ESM #1, #2 and #3, Hyatt, Pierrepont and Edwards mines are all within a 30-mile radius of the 5,000 tons-per-day (tpd) mill.

Key Facts


  • Location: Town of Fowler, NY

  • Property: controls more than 80,000 acres of mineral rights of which approximately 2,700 acres have both fee simple surface and mineral rights

  • 1,754 acres near Gouverneur where the ESM #4 mine, mill and tailings disposal facility are located

  • 703 acres in the town of Edwards, including the Edwards mine

  • 242 acres covering the Pierrepont mine

  • Primary metal: zinc

  • Secondary metals: none

  • Type of mining: underground

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