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Radium’s luminosity was part of its allure, and the dial painters soon became known as the "ghost girls" — because by the time they finished their shifts, they themselves would glow in the dark. They made the most of the perk, wearing their good dresses to the plant so they’d shine in the dance halls at night, and even painting radium onto their teeth for a smile that would knock their suitors dead.
Grace and her colleagues obediently followed the technique they’d been taught for the painstaking handiwork of painting the tiny dials, some of which were only 3.5 centimeters wide. The girls were instructed to slip their paintbrushes between their lips to make a fine point — a practice called lip-pointing, or a "lip, dip, paint routine," as playwright Melanie Marnich later described it. Every time the girls raised the brushes to their mouths, they swallowed a little of the glowing green paint.
Grace and her colleagues obediently followed the technique they’d been taught for the painstaking handiwork of painting the tiny dials, some of which were only 3.5 centimeters wide. The girls were instructed to slip their paintbrushes between their lips to make a fine point — a practice called lip-pointing, or a "lip, dip, paint routine," as playwright Melanie Marnich later described it. Every time the girls raised the brushes to their mouths, they swallowed a little of the glowing green paint.
Ever since the glowing element had been discovered, it had been known to cause harm; Marie Curie herself had suffered radiation burns from handling it. People had died of radium poisoning before the first dial painter ever picked up her brush. That was why the men at the radium companies wore lead aprons in their laboratories and handled the radium with ivory-tipped tongs. Yet the dial painters were not afforded such protection, or even warned it might be necessary.
That was because, at that time, a small amount of radium — such as the girls were handling — was believed to be beneficial to health: People drank radium water as a tonic, and one could buy cosmetics, butter, milk, and toothpaste laced with the wonder element. Newspapers reported its use would "add years to our lives!"
But that belief was founded upon research conducted by the very same radium firms who had built their lucrative industry around it. They ignored all the danger signs; when asked, managers told the girls the substance would put roses in their cheeks.