Coronado Global Resources (ASX:CRN) shares dipped by an approximate 5.9% to A$1.830, marking potentially its worst day since August 8, provided the losses persist.

The coal producer updated its guidance for the remainder of 2023, citing adverse operating conditions at its Buchanan mine and unexpected repair downtime at the Curragh mining complex.

Coronado adjusted its FY23 saleable production projection to between 16.2 metric tons and 16.4 metric tons, down from the previous range of 16.8 metric tons to 17.2 metric tons.

Associated mining costs per ton sold for FY23 are now predicted to fall between $97 million and $102 million, an increase from the former $84 million to $102 million.

As of the last close, the stock was down 2.3% YTD, reaching its lowest level since September 26.

Coronado Global Resources (ASX: CRN) is a leading producer of coal with multiple mining complexes.