Mine Portal
nounPronunciation: /maɪn ˈpɔːrtəl/
The entrance or exit structure of an underground mine, including the surface opening, surrounding framework, and initial tunnel sections. Mine portals require stabilization, sealing, or integration into reclamation plans to prevent unauthorized access, flooding, and contaminant mobilization.
Plain English
The opening at the surface where miners enter and exit underground mines, requiring safety closure during reclamation.
Etymology & History
Usage
"The abandoned coal mine portal was sealed with reinforced concrete to prevent water infiltration and unauthorized entry during site reclamation."
Style guide notes: Clarify portal type (adit, shaft entrance) when relevant to specific mine configuration.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
Why seal mine portals during reclamation?
To prevent unauthorized access, water infiltration, contaminant escape, and protect public and wildlife safety.
What methods seal mine portals?
Concrete bulkheads, gates, netting systems, and engineered backfill depending on geotechnical conditions and access needs.
Why Test Candidates on This?
Mine portal closure is a foundational reclamation component ensuring site safety and preventing ongoing environmental and human health risks.
Required skill level: Junior