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霍尔特麦克德莫特金矿位于安大略省马西森地区。它是25年前在该地区始建的第一座金矿,投资6200万加元。当时的矿石储量是470万吨,金品位4.4克/吨,回采贫化率15％。现今,霍尔特麦克德莫特金矿仍在继续开采,现有探明矿石储量270万吨,金品位4.5克/吨;远景储量250万,吨金品位4.7克/吨。预计,生产成本将从1991年的9.9美元/克下降到1992年的9.5美元/克。该矿现有191人,1991年超产黄金62.2公斤。
Holt McDermott Gold is located in the Massey area of Ontario. It was the first gold mine built in the area 25 years ago with an investment of CAD 62 million. At that time, the ore reserves were 4.7 million tons, the gold grade was 4.4 grams / ton, and the recovery rate was 15%. Today, Holt McDermott Gold Mine is still mining, the existing proven ore reserves of 2.7 million tons, gold grade 4.5 g / ton; long-term reserves of 2.5 million tons of gold grade 4.7 g / ton. The cost of production is expected to decline from $ 9.9 per gram in 1991 to $ 9.5 per gram in 1992. The mine now has 191 people, overproducing 62.2 kilograms of gold in 1991.