Some of the employees at the Poplar Grove coal mine in McLean County, Kentucky have received a letter informing them that their employment will end Feb. 18.

The letter is from Hartshorne Mining Group, a wholly-owned subsidiary of Paringa Resources in Australia.

The letter said the project will transition from two mining units to one and some employees will be retained as the effort continues to seek additional financing or possibly the sale of the mine.

Paringa has encountered financial and geological problems at the Poplar Grove mine.

The company halted the sale of its stock on the Australian Securities Exchange on Dec. 23, 2019.

Paringa also said an unexpected geological fault slowed production and there were problems that allowed water to saturate the floor of one unit of the mine.

WFIE-TV reports state officials have not yet received a WARN notice. That’s a U.S. labor law that requires companies with 100 or more employees to provide a 60-day notice in advance of plant closings or mass layoffs.

The company’s human resources director in Kentucky was not available to comment on how many employees are being terminated.