Sasquatch Resources’ Mount Sicker waste rock: design and risk notes for mine engineers
Reviewed by Tom Sullivan

First reported on MINING.com
30 Second Briefing
Sasquatch Resources is targeting roughly 300,000 tonnes of sulphide-bearing waste rock at the historic Mount Sicker copper-gold district on Vancouver Island, where legacy piles with a neutralisation potential of 0.2 and open shafts up to 200 feet deep continue to generate acid runoff and physical hazards. Modern sampling of the surface waste has returned average grades of about 2 g/t gold plus copper, silver and zinc, and the company plans to crush and process the material using density and X-ray fluorescence (XRF) ore-sorting in a closed-loop, reagent-free circuit. Because the project involves large-scale reprocessing without new mining, Sasquatch is working with regulators to craft a bespoke permitting pathway that could be replicated across an estimated 2,000 legacy mine sites in British Columbia.
Technical Brief
- Waste rock was historically dumped without any engineered containment, drainage control, or cover system.
- The site’s barren, unvegetated footprint after >100 years indicates chronic acid generation and metal toxicity.
- Sasquatch’s closed-loop, reagent-free ore-sorting circuit avoids tailings ponds and reduces water-treatment liabilities.
- Clean, inert fractions from sorting are intended for on-site placement as benign backfill and cover material.
- Regulatory work focuses on a bespoke permit that enforces environmental safeguards without full mine-start requirements.
Our Take
Historic copper cutoff grades around 8% at Mount Sicker imply that large volumes of sub‑cutoff waste could still carry meaningful gold and base metal values by modern standards, making reprocessing potentially attractive if logistics on Vancouver Island can be managed cheaply.
The very low neutralisation score (0.2) for Mount Sicker waste rock signals strong acid-generation potential, so any re-mining or rehandling strategy will likely be scrutinised by British Columbia regulators as a de facto acid rock drainage remediation project rather than just a small-scale gold play.
Within our 1099 Mining stories, most Canada- and copper-tagged items focus on new builds or expansions; legacy sites like Mount Sicker and Crofton smelter being revisited for both gold recovery and clean-up remain relatively uncommon, which can give early movers like Sasquatch Resources more room to shape permitting and community expectations.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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