| 31. | Accidents and earth tremors often result in casualties a mile ( 1.6 kilometers ) or more below the surface.
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| 32. | There have been no fatalities, but at least 102 houses have been destroyed in earth tremors accompanying the eruption.
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| 33. | On Wednesday, braving frequent earth tremors, firefighters finally crossed the unstable landslide and sent a probe into the wreckage.
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| 34. | Scores of miners die and thousands are injured every year in earth tremors, rock falls, explosions and other accidents.
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| 35. | Other reports said that the train cars were set in motion by earth tremors, which are common in Iran.
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| 36. | An earth tremor triggered the rockfall 1 . 3 miles below the surface on Monday, trapping the 15 miners.
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| 37. | A calibrated network of sensors monitors the ceiling, plotting expansions, contractions and, above all, the shifts caused by earth tremors.
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| 38. | The continuing earth tremors caused by the settling of the area following the Thursday eruption were the only remaining threat.
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| 39. | Residents in Kigali, 100 kilometers ( 60 miles ) east of Gisenyi, reported feeling earth tremors nearly two weeks ago.
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| 40. | Residents in Kigali, 100 kilometers ( 60 miles ) east of Gisenyi reported feeling earth tremors nearly two weeks ago.
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