Rasmus Christian Knudsen, a millwright and master joiner from Alborg, Denmark, established this mill on this site in 1878. In 1864, he immigrated to Utah with his wife and two small children, walking across the plains so that his family could ride. Immediately after arriving in Utah, Brigham Young engaged him in building mills. He first built the Mork Jeff Flour Mill in Heber City, then sawmills in Big Cottonwood Canyon, and other mills in Utah, including windmills. This stone is believed to be the largest millstone and the first pearling stone west of the Mississippi River. Rasmus cut it from a piece of hard quartzite hauled from Farmington Canyon by six yoke of oxen. The curved furrowing around its edge, known as sickle dressing, revolved against its counterpart on the stone above and created a scissoring action that removed the husks from barley grains. The mill operated for nearly 30 years and won prizewinning medallions for high quality products including white and graham flour, cornmeal, pearled barley, cracked wheat, hominy, and steel-cut oatmeal milled in a machine invented by Rasmus Knudsen. Both Knudsen's Grove, founded in 1912, and Knudsen's Corner, in 1919, owed their origins to the Knudsen Flour Mill.