Ann: Resource Drill-Out Completed at Oposura, page-8

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"The East Zone mineralisation is mostly horizontal and displays significant vertical height, which is expected to simplify the mining process. The near-surface mineralisation within the eastern and southern areas is likely to be mined by open pit and, where the terrain rises to the west and north (refer Figure 3), underground mining is expected to be carried out using a simple room and pillar mining method utilising industry-standard mechanised mining equipment."

While no final decision to mine has been made at this stage, this certainly gives a hint as to the Company's thinking.
Cant wait to see the drill results for Sara Alicia.
And the drill results for Alacran, if Teck ever do get around to sharing those 2017 drill results with us.
The future is looking good with 3 very prospective projects.