| 31. | The complex has of office space above ground and below ground.
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| 32. | The pollution lies about 20 to 25 feet below ground surface.
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| 33. | He accused police of planning a coordinated attack from above and below ground.
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| 34. | Below ground spring brings activity that homeowners are likely to abhor.
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| 35. | In many other countries, hydrants in streets are below ground level.
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| 36. | Extraction is done by digging narrow tunnels and shafts below ground.
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| 37. | The Stone foundation goes below ground and is set on bedrock.
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| 38. | It runs through bedrock at a depth of about below ground.
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| 39. | Advertisers also are taking their messages below ground in new ways.
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| 40. | Tops should be at least 18 inches below ground; even deeper is better.
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