| 31. | At this time Deep Navigation had an extensive underground mine railway, with of underground railways.
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| 32. | Friendly Belgians moved him from one home to another at night on an underground railway.
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| 33. | The play was presented by the Underground Railway Theater.
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| 34. | The plans also set aside space for the railway line and an underground railway station.
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| 35. | The tavern was believed to be a stop on the Underground Railway for freed slaves.
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| 36. | Being a fully underground railway, it is also considered the highest subway in the world.
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| 37. | Underground railway links include the Jubilee line from Cutty Sark in the centre of Greenwich.
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| 38. | The Haifa underground railway system is called Carmelit.
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| 39. | The proposed underground railway to Sydney Airport was completed in 2000 as a CityRail suburban railway.
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| 40. | The Central London Railway was the first underground railway to have the station platforms illuminated electrically.
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