Here are the descriptions matched to the correct mining types:
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Underground mining - The drilling deep into the Earth to collect ores and minerals.
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Placer mining - The removal of minerals from alluvial deposits and stream beds.
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Strip mining - The collection of ores and minerals close to Earth's surface, removing narrow portions of the surface at a time.
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Open pit mining - The collection of ores and minerals close to Earth's surface, removing large portions of the surface at a time.