Although production isn’t likely to begin until later in the 1990s, a $44-million shaft sinking and underground exploration program is well under way on the property, situated 6.5 km north of Sudbury in Blezard Twp., Ont. Lindsley is 100%-owned by Falconbridge.
Sinking of the T-L (Thayer Lindsley) exploration shaft began in March of this year and will ultimately reach a depth of 1,633 m. Exploration headings are to be driven on the 1,290- and 1,560-m levels to allow underground diamond drilling.
Extensive surface diamond drilling conducted previously had indicated four small potentially mineable zones of nickel-copper bearing ore, with significant precious metals content.
The current underground exploration program, which was approved by Falconbridge management last July, is designed to further evaluate the deep orebodies of the Lindsley deposit with a view to developing a future new mine.
The initial reserve figure is based on a total of at least four separate mineralized zones. Lying at depths of between 660 to 1,140 m, the four zones occur within the South Range of the Sudbury Igneous Complex. Mineralization found in the No 4 zone is enriched in copper, gold, platinum and palladium and is, on average, three times the grade of all other Falconbridge mines in the Sudbury area. The average grade of Falconbridge’s other mines is about 1.53% nickel.
Underground drilling and drifting are planned for 1991, with a feasibility study expected by early 1992.
The deposit takes its name from Falconbridge’s founder, Thayer Lindsley, who was recognized earlier this year as one of the inaugural inductees into the Canadian Mining Hall of Fame.
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