Golden Queen Mining Co. Ltd. on Dec. 19 declared commercial production at its Soledad Mountain gold-silver mine in California.

The processing plant achieved an average of 80% of design throughput capacity over the past two months, treating an average 10,500 tonnes per operating day during October and November.

Soledad Mountain has shipped approximately 17,800 ounces of gold and 184,875 ounces of silver since the first pour in early March.