| 1. | Key to the plant s success was the existence underground of large salt formations.
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| 2. | This method of salt formation and collection results in salt crystals that are not uniform.
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| 3. | The cavern is carved from a geological salt formation.
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| 4. | Three-dimensional seismic technology is allowing oil companies to see into salt formations for the first time.
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| 5. | But geologists say that for 1, 000 times that long, this 2, 000-foot-thick salt formation has remained undisturbed.
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| 6. | They will be heading inside a salt formation at least 500 million years old that lies beneath Lake Erie.
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| 7. | Since these salt formations have a wide lateral extent, increased difficulty has been experienced in all phases of exploration.
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| 8. | The Moss Bluff facility stores gas in caverns washed from an underground salt formation near Liberty County's southern border.
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| 9. | The site is a salt formation that the Energy Department says has been stable for the last 250 million years.
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| 10. | The government is shutting the Weeks Island site because of a crack in the salt formation above the storage chambers.
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