The Lindero Property contains two known porphyry gold-copper deposits. The Lindero Deposit which is the focus of current mining activities (the Lindero Mine); and the Arizaro Deposit which is located 3.2 km southeast of the Lindero Mine. In the Central Andes, the altiplano or puna is a high plateau of more subdued relief between the Eastern Cordillera, a rugged region usually rising to between 3 km and 4.5 km, and the Western Cordillera, which is a high spine of mountains that may reach as much as 5 km in height. The Arizaro Volcanic Complex consists of two superimposed concentric volcanic centers, the Arizaro and the Lindero cones, located in the Archibarca volcanic arc at the southern margin of the Salar de Arizaro basin. Basement rocks crop out to the north of the Lindero Deposit, and consist of coarse- grained Ordovician granites uncomformably overlain by Early Tertiary red bed sandstones. The Lindero– Arizaro complex, a series of diorite to monzonite porphyritic stocks, intrudes these units.  Lindero Deposit Mineralized zones at the Lindero Deposit form a semi-circular shape about 600 m in diameter which extends to a depth of 600 m, consisting of four different zones at the surface. The distribution of gold–copper mineralization at Lindero shows a strong relationship to lithology, stockwork veinlets, and alteration assemblages. Higher grades of gold–copper (approximately 1 g/t Au and 0.1 % Cu) are commonly associated with sigmoidal quartz, quartz–magnetite– sulfide, bi ........

The mine at the Lindero Property is an owner-operated conventional open pit mining operation. The key mining fleet equipment is composed of six trucks with an operational capacity of 96 tonnes per unit and two 17 cubic yard wheel loaders.  Pit designs  The ultimate pit was designed to allow mining of mill feed material. Internal pits or phases within the ultimate pits were designed to enhance mine economics by providing higher-value material to the leach pad earlier in the mine life.  Bench height  Pit designs were developed based on 8 m benches for mining.  Haulage considerations  Ramps were designed to have a maximum centerline gradient of 10 percent. In areas where the ramps may curve along the outside of the pit, the pit inside gradient may be as much as 11 or 12 percent for short distances.  Ramp width was determined as a function of the largest truck width to be used in mine planning. Design criteria accounts for 3.5 times the width of the truck for running room in areas using two-way traffic. An additional width is added to the ramp for a single safety berm at least two thirds of a tire height inside the pit. For roads designed outside of the pit, an additional safety berm is accounted for in the road width.  The mining truck fleet has an operational capacity of 96 tonnes per unit. The phases were designed to have 24.5 m wide ramps where two-way traffic is anticipated.  Ultimate pit and pit phasing The ultimate pit design is circular with a maximum diameter of 85 ........

- subscription is required.

- subscription is required.

- subscription is required.