While the red pottery is noted for its especially high radioactivity, other colors emit radiation.
Also, other pottery from the era was glazed using similar recipes, so just about any pottery from the early to mid 20th century may be radioactive.
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All Shenango production stopped in 1991, as the company couldn't rise above increased labor costs and the popularity of inexpensive imported china. Ryan holds degrees from the University of Cincinnati and Indiana University and certifications in emergency management and health disaster response.
The Hall China Company was founded by Robert Hall in East Liverpool, Ohio, United States in August 1903 following the dissolution of the two-year-old East Liverpool Potteries Company.
The dishes are highly collectible, both because of their vivid colors (and because the radioactivity is cool.) But is it really safe to eat off these dishes or are they best thought of as decorative pieces to be admired from afar?
Here's a look at just how radioactive the dishes are today and the risks of using them for serving food.