In December 1992, Curragh Resources was issued a Mine Development Certificate for a mine/mill complex. The company then projected that operations could yield approximately 250,000 tonnes of zinc and lead sulphide concentrates per annum. The accompanying analysis assumes that operations will produce approximately 100kt/a Zn in concentrate and 24kt/a Pb in concentrate. Development of the Cirque mine did not materialise and the property was purchased by Teck and Korea Zinc in 1994. In 1995 a feasibility study was completed with uneconomic results and the project has since been on standby. In a company presentation released on September 2015 it was reported that drilling had recommenced at the Cirque property.