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The amount of light each barium sulfate particle scatters depends on its size, Peoples said.

The researchers ultimately selected a relatively inexpensive compound called barium sulfate.

The new paint contains a compound called barium sulfate, which is also used to make photo paper and cosmetics.

The science of the paint comes down to a high concentration of barium sulfate, a compound that’s already used in paints and photographic paper.

Later, leached barium sulfate from the weapons program was mixed with contaminated soil and used to cover trash at the West Lake Landfill, which is adjacent to the smoldering Bridgeton Landfill.