To extract the gold from the ore, a low-concentration cyanide solution is applied to the ore on the leach pad using a low-pressure irrigation sprinkler system. Alamos installs inter-lift liners on the pad on a periodic basis to reduce percolation time, which decreases the time it takes to extract and produce gold from each lift of the heap.
The resulting gold-bearing solution is channelled to the pregnant solution pond and is then pumped to the carbon-in-column circuit, where gold is recovered from the solution. The barren solution is then recirculated to the heap with added cyanide. Dore bars are produced on site and transferred to a third-party refinery for final recovery of gold and minor amounts of silver.