Australia-based OceanaGold has received supplementary environmental impact statement record of decision (SEIS ROD) for its Haile underground mine in South Carolina, US.

SEIS ROD has been issued by the US Army Corps of Engineers (ACOE), which also granted a permit under Section 404 of the Clean Water Act for the expansion of the Haile Gold Mine located in Kershaw.

The move marks the completion of the federal permitting process for the Haile underground mine, a development aimed to expand the production potential of the existing open-pit operation.

Recently, the South Carolina Department of Health and Environmental Control (DHEC) issued the Mine Operating Permit (MOP) for the Haile expansion project.

OceanaGold president and CEO Gerard Bond said “The receipt of the Haile SEIS ROD and the MOP represents a significant milestone for OceanaGold, putting the Company on a clear path to deliver increased gold production and lower unit costs at this cornerstone asset.

“We are thrilled to be progressing the next stage of Haile’s growth as we expand our operations underground and, with exploration success, pursue further opportunities to profitably extend the mine life.”

With the receipt of the SEIS ROD, 404 Permit and the MOP, OceanaGold will move ahead with the development and operation of the underground mine and an expansion of the operating footprint at the mine. 

The expansion project will involve the development of additional waste containment facilities and expanded tailings storage capacity.

OceanaGold plans to start production from the Haile underground remains in the fourth quarter of 2023.