Little Known Facts That Might Interest You

We did a guided tour of lighthouses in the bottom part of Western Australia in 2005 , the tour guide explained that it was originally thought it was the isolation that sent workers insane , but latter learned it was the mercury which they apparently used to stir with their bare hands./ breathing the fumes was the cause


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Mercury Poisoning: Many 19th-century lighthouses—such as the Wonga Shoal Light—used massive 11-ton lenses that floated in heavy baths of liquid mercury to achieve smooth rotation. Keepers were constantly exposed to toxic mercury fumes, which is known to cause severe psychological symptoms like hallucinations, erratic moods, and severe cognitive decline (often referred to as "mad hatter" syndrome)

Lighthouse keepers certainly faced mental strain, but modern research suggests their "madness" was often caused by chronic mercury poisoning or lead paint, rather than just the isolation of the job itself.
 
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