Published  • loading... • Updated 
Sio Silica Submits Revamped Silica Sand Mining Proposal in Eastern Manitoba
Sio Silica's revised proposal reduces well drilling and includes water filtration and UV treatment to address prior water quality concerns, says the company.
- Oct. 28, 2025 — Sio Silica, Calgary-based mining firm, filed a second application for a mining project in eastern Manitoba, The Canadian Press first reported.
- After being rebuffed last year, the project failed because the Manitoba government raised water quality concerns and many area residents opposed it, while the Brokenhead Ojibway Nation recently voted against partnering.
- The revised filing says it will drill fewer wells across a much smaller area than the original plan, with phased extraction reaching 500,000 tonnes annually by the fourth year and filtration and UV treatment of water.
- Premier Wab Kinew said Monday the proposal will go through the assessment process, and the Clean Environment Commission has started accepting public comments online; the ethics commissioner did not find fault with Sio Silica.
- Beyond local debate, the project matters because the silica is used in semiconductors, solar panels and fibre optics, and it previously drew scrutiny when former premier Heather Stefanson and two cabinet ministers broke conflict-of-interest rules after the 2023 election.
Insights by Ground AI
11 Articles
11 Articles
Manitoba seeks public input on revised Sio Silica sand extraction proposal
Manitoba’s environment department is inviting public feedback on a scaled-back silica sand mining proposal from Sio Silica Corporation, marking the company’s second attempt to secure provincial approval for its controversial extraction plans in southeastern Manitoba.
Sio Silica plans to drill fewer wells, remove less sand as part of new request for environmental licence
Alberta mining company Sio Silica has proposed to drill fewer wells and extract less sand as part of a new application for an environmental licence to bore below the surface of southeastern Manitoba.
·Canada
Read Full ArticleBreaking News, Sports, Manitoba, Canada
·Winnipeg, Canada
Read Full ArticleCoverage Details
Total News Sources11
Leaning Left5Leaning Right2Center1Last UpdatedBias Distribution63%  Left
Bias Distribution
- 63% of the sources lean Left
63% Left
L 63%
12%
R 25%
Factuality
To view factuality data please Upgrade to Premium
 US Edition
US Edition





















