The Mason project is currently owned by Hudbay Minerals Inc.  Under the terms of the royalty, a 0.4% NSR royalty on the Mason project is payable to Sandbox on a quarterly basis from the minerals produced from the property.

The Mason project is located in Nevada, USA. The Mason project is a large greenfield copper deposit located in the historic Yerington District of Nevada and is one of the largest undeveloped copper porphyry deposits in North America. The Mason deposit is a large tonnage, copper-molybdenum deposit and is planned to be a traditional open pit shovel/truck operation with a copper sulphide mineral processing plant producing commercial grade copper and molybdenum concentrate. 

A preliminary economic assessment was released on the Mason project in April 2021 with an effective date of January 1, 2021, showing a 27-year mine life with average annual production of approximately 140,000 tonnes over the first ten years of full production. With total Measured and Indicated Resources of 2.2 billion tonnes at a grade of 0.29% Cu and total Inferred Resources of 237 million tonnes at a grade of 0.24% Cu, Mason is one of the largest greenfield copper projects in the Americas.  The above information is sourced from a Hudbay Minerals Annual Information Form found on the Hudbay Minerals Inc. profile on

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