The Troilus project’s long history began with exploration work in the late 1950’s following the discovery of many erratic blocks containing copper and nickel anomalies. The Troilus property was initially staked by Kerr Addison and Minova; the project was then acquired by Inmet (formerly known as Metall) in 1993, and has been owned by First Quantum since 2014. Drilling began in 1986 (24 drill holes, totalling 3,590m), which led to the discovery of zone 86 (Z86). More claims were added to the property in 1987, where the Troilus mine would eventually be located. A large gold float dispersion train was found by prospecting and drilling (26 drill holes, totalling 4,413m), leading to the discovery of the main mineral body on the property, zone 87 (Z87), named after the year of its discovery. In 1991, anomalous gold-copper mineralization was confirmed in what is now known to be Zone J4 (J4). The Troilus mine began producing gold and copper in 1996 as a conventional open-pit operation. Over the life of the Troilus mine, 2 million ounces of gold and almost 70,000 tonnes of copper were produced.