Heap Leach Pad
nounPronunciation: /hip liːtʃ pæd/
An engineered surface structure where crushed ore is stacked and irrigated with leaching solution to extract metals through chemical dissolution. The pregnant solution containing dissolved metals percolates through the ore pile and is collected for further processing.
Plain English
A pile of crushed ore where chemicals are sprayed to dissolve and extract valuable metals.
Etymology & History
Usage
"The heap leach pad required capping and stabilization before the mining operation closed."
Style guide notes: Capitalize when referring to specific named facility; use lowercase in generic descriptions.
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Frequently Asked Questions
What happens to heap leach pads after mining ceases?
Pads are capped with impermeable layers, stabilized, and monitored for seepage and structural integrity.
Why are heap leach pads environmental concerns?
Residual chemicals and metals in ore can leach into groundwater if containment fails.
Why Test Candidates on This?
Heap leach pad reclamation and closure monitoring are critical components of comprehensive mine site remediation.
Required skill level: Mid