| 1. | There is a waste rock overburden of about 33 million cubic metres.
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| 2. | There is a waste rock overburden of about 9.5 million cubic meters.
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| 3. | Discharge from other tunnels and waste rock dumps accounts for 21 %.
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| 4. | Surface mining land consists of linear pits and piles of waste rock.
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| 5. | It will also leave waste rock piles as tall as 30-story buildings.
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| 6. | Today very little remains except for rubble, tailings and much waste rock.
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| 7. | The waste rock will sit there until the next Ice Age.
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| 8. | `A lot of waste rock will generate acid, ` Kuypers said.
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| 9. | What happens when 400, 000 caribou meet 250 million tons of waste rock?
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| 10. | Here, pieces of waste rock were separated from ore by hand and dumped.
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