An asphalt plant is a plant used for the... |
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The sun silhouetted against the dark... |
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In addition to air pollution from oil... |
The process of oil refining releases many... |
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Oil refineries are typically huge... |
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An oil refinery is an industrial plant... |
Cement is the key ingredient in concrete... |
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A coal-fired power station is a fossil... |
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Industrial air pollution sources are... |
