![TIL The phrase "mad as a hatter" originated in the hat making industry of the 18th century as mercury nitrate was a vital substance used in the production process. This lead to TIL The phrase "mad as a hatter" originated in the hat making industry of the 18th century as mercury nitrate was a vital substance used in the production process. This lead to](https://external-preview.redd.it/aWkeUQnfJDvQ5ZCb559gBLQKBUZdGPY-oO0iCLCKJYg.jpg?auto=webp&s=ad232246c954646317124457dffb4bd1eb5d0415)
TIL The phrase "mad as a hatter" originated in the hat making industry of the 18th century as mercury nitrate was a vital substance used in the production process. This lead to
![An engraving depicting the manufacturing of beaver hats: 'felting' the body of the hats in the 'kettle'. Mercury was used during the manufacture, and many hatters suffered from the uncontrollable shaking typical An engraving depicting the manufacturing of beaver hats: 'felting' the body of the hats in the 'kettle'. Mercury was used during the manufacture, and many hatters suffered from the uncontrollable shaking typical](https://c8.alamy.com/comp/RJGY7P/an-engraving-depicting-the-manufacturing-of-beaver-hats-felting-the-body-of-the-hats-in-the-kettle-mercury-was-used-during-the-manufacture-and-many-hatters-suffered-from-the-uncontrollable-shaking-typical-of-mercury-poisoning-dated-19th-century-RJGY7P.jpg)
An engraving depicting the manufacturing of beaver hats: 'felting' the body of the hats in the 'kettle'. Mercury was used during the manufacture, and many hatters suffered from the uncontrollable shaking typical
![Ending the Danbury Shakes: A Story of Workers' Rights and Corporate Responsibility - Connecticut History | a CTHumanities Project Ending the Danbury Shakes: A Story of Workers' Rights and Corporate Responsibility - Connecticut History | a CTHumanities Project](https://connecticuthistory.org/wp-content/uploads/2013/08/DanburyHatFur.jpg)
Ending the Danbury Shakes: A Story of Workers' Rights and Corporate Responsibility - Connecticut History | a CTHumanities Project
Mad Hatter, Matlock - Ooooo look... Ferrero Rocher Freakshake added to our Menu :) Nutella milkshake, fresh cream filled brandy snap basket, strawberries & a Ferrero Rocher!! Freakshakes are available 9am till
![An engraving depicting the manufacturing of beaver hats: 'felting' the body of the hats in the 'kettle'. Mercury was used during the manufacture, and many hatters suffered from the uncontrollable shaking typical An engraving depicting the manufacturing of beaver hats: 'felting' the body of the hats in the 'kettle'. Mercury was used during the manufacture, and many hatters suffered from the uncontrollable shaking typical](https://c8.alamy.com/comp/RJGY8E/an-engraving-depicting-the-manufacturing-of-beaver-hats-felting-the-body-of-the-hats-in-the-kettle-mercury-was-used-during-the-manufacture-and-many-hatters-suffered-from-the-uncontrollable-shaking-typical-of-mercury-poisoning-dated-19th-century-RJGY8E.jpg)
An engraving depicting the manufacturing of beaver hats: 'felting' the body of the hats in the 'kettle'. Mercury was used during the manufacture, and many hatters suffered from the uncontrollable shaking typical
Mad Hatter, Matlock - Our brand new freakshakes are now available!! We are fully air conditioned and super dog friendly too 😀 | Facebook
![Alice in Wonderland Mad Hatter Shaking Off His Shoes Postcard #2 | Topics - Fine Arts - Other, Postcard / HipPostcard Alice in Wonderland Mad Hatter Shaking Off His Shoes Postcard #2 | Topics - Fine Arts - Other, Postcard / HipPostcard](https://storage.googleapis.com/hippostcard/p/ca71eda09c2a99a323ea5a2f1c856dd1-800.jpg)