| 1. | :Not until it's rather too late, when the ground starts to sink.
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| 2. | You could see the ground start moving as the roots loosened.
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| 3. | The level ground starts to slope up gently to the east.
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| 4. | Odd numbered line equipment could not be made ground start, their ferrods being inaccessible.
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| 5. | The most common types of signaling are loop start, ground start, and E & M.
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| 6. | It may use loop start or ground start signaling.
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| 7. | The drip irrigation lines will be ready to lay once the ground starts to thaw.
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| 8. | Suddenly, the ground starts to shake and rocks fall.
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| 9. | As the laser begins to burn a hole in the ice the ground starts to shake.
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| 10. | Then at the back end of the park the grates on the ground start to mist.
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