| 41. | Another tensile fracture mechanism is " hydraulic fracturing ".
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| 42. | Low-volume hydraulic fracturing can be used to restore permeability.
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| 43. | Several additional countries are planning to use hydraulic fracturing.
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| 44. | This includes hydraulic fracturing, oil spills, and air pollution.
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| 45. | Before massive hydraulic fracturing, the Wattenberg field was uneconomic.
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| 46. | Recycled flowback water can be reused in hydraulic fracturing.
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| 47. | The hydraulic fracturing report was published October 2012.
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| 48. | The process of hydraulic fracturing generates significant criticism.
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| 49. | Hydraulic fracturing is highly controversial in many countries.
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| 50. | No quakes were linked to hydraulic fracturing itself.
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