| 1. | Cerrejon is the second largest open pit coal mine in the world.
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| 2. | Open-pit coal production and underground development are not affected, the company said.
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| 3. | On Friday morning, nine deep-pit coal mines joined in, declaring a general strike.
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| 4. | The Ellen Pit coal mine was sunk in 1859.
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| 5. | Cerrej�n is considered to be one of the largest open-pit coal mines in the world.
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| 6. | The colliery closed on 18 December 2015, marking the end of deep-pit coal mining in Britain.
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| 7. | The Cerrej�n coal mine is one of the largest open pit coal mine in the world.
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| 8. | The world's largest open-pit coal mine, the West Open Mine, is located south of the city.
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| 9. | A major open pit coal mine is planned at the boundary of Jasper National Park in Alberta.
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| 10. | In 1950, the operation converted to strip mining and became the world's largest open pit coal mine.
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