yuiyoshishak
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Presentations

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Impacts of mining

7 years ago • 37144 Views

Manganese nodules

7 years ago • 4005 Views

Marine resources

7 years ago • 20783 Views

Mineral conservation

7 years ago • 22147 Views

Mineral economics

7 years ago • 16238 Views

Mineral economics

7 years ago • 820 Views

Mining hazards

7 years ago • 11951 Views

National mineral policy

7 years ago • 10744 Views