the Colorado State Capitol building in 1895. Yule Marble quarried between 1907 and 1941 can be found in banks, mausoleums, libraries, schools, hotels, and government buildings from the west coast (Seattle south to Los Angeles) to the east coast, including the Equitable Building skyscraper in New York City. The dimension of the deposit enables large blocks to be quarried, which is why Yule Marble was selected for the Tomb of the Unknowns (Tomb of the Unknown Soldier) in Arlington National Cemetery. In 1931, the 56-ton (55.86 metric ton) block for the die section (on which six wreaths, three Greek figures, and the inscription were carved) was the largest single piece of marble ever quarried at that time. Today, the marble is primarily shipped to Italy to supply fabricators throughout Europe. Blocks also go to Saudi Arabia, Peru, and other developing international markets. Finished marble is used for tile and slabs (walls, countertops, etc.). As the marble industry cycled, the town's economy, being based on a single industry, also fluctuated. At the same time, had Marble not made the transition from its origins as a mining town to quarrying Yule Marble, the town would have died, as did other Colorado mining towns such as nearby Crystal and Schofield. State rock On 9 March 2004, Yule Marble became the official state rock of Colorado. The designation was the result of petitioning by Girl Scout Troop 357 of Lakewood, Colorado of the Colorado General Assembly, who in turn passed a bill that was signed by Governor Bill Owens (R). Discovered: 1873 to mid-1880s Yule Marble was discovered in the Crystal River Valley in the spring of 1873 by geologist Sylvester Richardson. George Yule (for whom the marble was later named) was the prospector who "rediscovered" the marble in 1874. In the same year, an unknown person took some marble—from which polished samples were made—and appeared in Denver but failed to generate interest. The marble became lost again, and was rediscovered 10 years later, yet again by accident. By this time, prospectors were digging into Whitehouse Mountain for silver and gold when they encountered the Treasure Mountain Dome and thick marble. This time a transition started that moved the town away from mining to one of quarrying marble, although some locals were still involved with mining in 1910. The transition enabled the town to survive while nearby towns such as Crystal and Schofield became