Porcupine Ledges
MSHA Mine ID: 1700901
Material Type
Construction Sand and Gravel
Mine Type
Surface
Classification Confidence
95% (HIGH)
Location Status
VERIFIED
Operator Information
Operator
Freshwater Stone
Controller
Jeffrey R Gammelin
Location
County: Washington
State: ME
Country: US
Data Source
US_MSHA
Snapshot: 2026-01-30
Classification: vv1
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