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b=o=b: permit required
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b=o=b: concrete mixing 1
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b=o=b: concrete mixing 2
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b=o=b: 280 to 380 East
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b=o=b: concrete mixing 3
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b=o=b: concrete mixing 4
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b=o=b: concrete mixing 5
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b=o=b: waterfront #1
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b=o=b: waterfront #2
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b=o=b: Liverpool Street Station 2
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b=o=b: Liverpool Street Station 1