TFS notes11 May 2025 10:13
Four tailings storage facility (TSF) options were assessed as part of the PFS as detailed below:
1. Coastal Plains Main TSF (Distal to Cascabel Concession) 40 km from the processing plant / store the full 529 Mt with starter facility to reduce costs.
2. Coastal Plains East TSF (Distal to Cascabel Concession) 36.5 km from the processing plant / store the full 529 Mt
3. Parambas TSF (On Cascabel Concession). located proximal to the proposed processing plant (within 2 km) on the Cascabel concession. maximum capacity of approximately 60 Mt with the facility only suitable for use at lower throughputs (i.e., ≤ 12 Mtpa) as such this facility could be employed as a starter facility for the early phases of operations.
4. Cachaco TSF (On Cascabel Concession). located proximal to the proposed processing plant (within 3 km) on the Cascabel concession and approximately 1.5 km west of the Tandayama Americana Deposit. maximum capacity of approximately 60 Mt with the facility only suitable for use at lower throughputs (i.e., ≤ 12 Mtpa) as such this facility could be employed as a starter facility for the early phases of operations.
The PFS designs considered the staged ramp up in production starting at 12 Mtpa for six years, followed by an expansion to 24 Mtpa thereafter.
Coastal Plains Main was used to form part of the PFS, with budget costs of $267m (a 40k pipeline will not be cheap).
My vote is they will run with one of the two local (budget) options while mining open pit in the first 6 years, then switch to Coastal Plains Main once Alpala is up & running.
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