Unverified50% confidenceOpinionExact time
The smaller the tunnel, the more construction costs decrease exponentially.
1
Sources
50%
Confidence
Long-term
Relevance
9/11/2026
First Seen
Sources
Related Entities
Related Claims
Cite This Claim
Stable URI
https://kongchang.com/claim/900994API
curl https://kongchang.com/api/v1/knowledge/claims/900994MCP
get_claim(id=900994)