![Do you know where the "Mad Hatter" got his name? Here's a clue - vintage felt hat: 3,844 ppm MERCURY! [100 is unsafe] Do you know where the "Mad Hatter" got his name? Here's a clue - vintage felt hat: 3,844 ppm MERCURY! [100 is unsafe]](https://i0.wp.com/tamararubin.com/wp-content/uploads/2019/07/Vintage-Green-Felt-Ladies-Hat-with-Mercury-Lead-Safe-Mama-2019-1.jpg?ssl=1)
Do you know where the "Mad Hatter" got his name? Here's a clue - vintage felt hat: 3,844 ppm MERCURY! [100 is unsafe]
![Beaver hats, 'felting' the body of the hats in the 'kettle' Mercury was used during the manufacture..., Stock Photo, Picture And Rights Managed Image. Pic. IAM-0460001647 | agefotostock Beaver hats, 'felting' the body of the hats in the 'kettle' Mercury was used during the manufacture..., Stock Photo, Picture And Rights Managed Image. Pic. IAM-0460001647 | agefotostock](https://previews.agefotostock.com/previewimage/medibigoff/4056fec08a2e914a74de4992fedbb6f3/iam-0460001647.jpg)
Beaver hats, 'felting' the body of the hats in the 'kettle' Mercury was used during the manufacture..., Stock Photo, Picture And Rights Managed Image. Pic. IAM-0460001647 | agefotostock
![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
![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/HatSizing.jpg)