| 31. | The reserves have been estimated at 6 billion tons, with an iron content of 2 billion tons.
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| 32. | The iron content gives both the reddish color and the coagulation of rust and accumulation of ferrous oxide.
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| 33. | During summer months, the falls give off a yellow glow due to high iron content in the waterbed.
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| 34. | Clay typically has a low-iron content and is formed into a shape gradually by hand on a wheel.
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| 35. | This depended on many factors including glaze composition, iron content and whether fired in reduced or oxidised conditions.
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| 36. | Water with a high iron content looks " rusty " and leaves an orange stain on sinks and tubs.
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| 37. | It says on the article that spinach doesn't make you stronger because of a miscalculation in its iron content.
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| 38. | Hand-held metal detectors are thrown off by the high iron content of many boulders where the debris was found.
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| 39. | To double the iron content in the rice, the research team added a ferritin gene derived from a French bean.
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| 40. | The water has a high iron content, which accounts for its apparent color and perhaps the reputed fertility for women.
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