| 21. | A fog signal, formerly used at New Dungeness Lighthouse, was installed in April 1880.
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| 22. | This and the fog signal building were all that remained of the original buildings.
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| 23. | He maintained the grounds and fog signal, and was credited with saving 15 lives.
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| 24. | The original stucco fog signal building was restored in 2001.
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| 25. | The Fog Signal was discontinued in 1987, although the horn is still in place.
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| 26. | A fog signal may be sounded from a separate building.
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| 27. | *Manana Island Fog Signal Station is listed with Nearest City = Monhegan Island, Maine.
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| 28. | The fog signal is a single tone diaphone which emits 1 blast every 15 seconds.
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| 29. | Feeding the fog signal boilers was an arduous task.
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| 30. | In 1952 the Commissioners of Irish Lights decided to update the fog signal the lighthouse.
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