However, around 1958, the company realized that their salt was not living up to their slogan. A chemist, Richard A. Patton, was given the assignment to solve this problem. He invented a machine that would coat the salt with a byproduct of salt mining, magnesium oxide. Calcium silicate is now used instead for the same purpose. The same chemist developed a total of 27 patents, along with fellow chemists, that expanded Morton's commercialization of magnesium oxide. The Morton Salt Girl, also known as the Umbrella Girl, has gone through seven different iterations, including the latest update in 2014 for its "hundredth birthday", with other updates being in 1921, 1933, 1941, 1956, and 1968; the company sells associated memorabilia and makes some of its vintage advertisements freely available. In addition to the Morton Salt Girl being updated, its centennial in 2014 was celebrated with 100 parties in 100 cities, Morton Salt Girl Centennial Scholarships to benefit certain fine arts and culinary arts students at the School of the Art Institute of Chicago and the Kendall College School of Culinary Arts, Morton Salt Girl day at Wrigley Field, Facebook and Instagram lookalike contests, and other activities. Also in 2014, the Morton Salt Girl was voted into the Advertising Week Walk of Fame on Madison Avenue in New York City; it is the first girl icon to be inducted.