| 31. | Such Semaphores are called binary semaphore and are very similar to Mutex.
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| 32. | Hayes was born in Semaphore, South Australia on 16 February 1924.
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| 33. | Martin Wong, Press Release for Semaphore Gallery, 1984.
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| 34. | semaphore signalling system is being replaced by a colour light signalling system.
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| 35. | There is a semaphore signal at the up end of the station.
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| 36. | Semaphore remained of great maritime significance for the state until the 1880s.
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| 37. | North of the tower is a flag semaphore signal station.
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| 38. | The level crossing was protected by up and down stop semaphore signals.
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| 39. | This signal is also a still a red semaphore signal.
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| 40. | It replaced a semaphore tower which had previously stood on the site.
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