2. Kimberley Diamond Mine-South Africa
3. Monticello Dam-California
4. Bingham Canyon Mine-Utah
5. Great Blue Hole-Belize
6. Mirny Diamond Mine-Siberia
7. Diavik Mine-Canada
8. Sinkhole-Guatemala
9. Udachnaya Pipe-Russia
10. Chuquicamata-Chile
sumber
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