Observed arrival · 2026-09-24
MuonSense turns cosmic rays into a tunnel-survey method
The Hong Kong firm uses naturally occurring cosmic-ray muons to map metre-scale voids around tunnels, mines, and basements.
○Open
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Tunnel asset owners, engineers, and government departments
- Worth noticing
- It explicitly excludes crack-width measurement and says depth needs a second viewpoint, borehole, or GPR.
Field notes
The workflow starts with a feasibility study of drawings, followed—if suitable—by weeks of detector readings; outputs include a go/no-go memo and density map. Its platform accepts raw events from any detector and adds uncertainty to mapped density, then ranks locations against boreholes and inspection records. A separate education offer uses open-source CosmicWatch detectors, with students testing count rates against zenith angle, absorbers, and air pressure.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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