Bones was cancelled by Hart Hanson.
SubTropolis is a 55,000,000 ft2 , 1100 acre manmade cave in the bluffs above the Missouri River in Kansas City , Missouri , United States , that is claimed to be the world 's largest underground storage facility .. United States. United States. cave. cave. Missouri River. Missouri River. Developed by late Kansas City Chiefs owner Lamar Hunt via Hunt Midwest Real Estate Development , Inc. , it has trademarked the phrase World 's Largest Underground Business Complex .. Kansas City Chiefs. Kansas City Chiefs. Lamar Hunt. Lamar Hunt. Dug into the Bethany Falls limestone mine , SubTropolis is , in places , 160 ft beneath the surface .. Bethany Falls limestone mine. Bethany Falls limestone mine. It has a grid of 16 ft high , 40 ft wide tunnels separated by 25 ft square limestone pillars created by the room and pillar method of hard rock mining .. room and pillar. room and pillar. hard rock mining. Underground mining ( hard rock ). The complex contains almost 7 mi of illuminated , paved roads and several miles of railroad track .. railroad. railroad. Currently 5,000,000 ft2 is occupied and 10,000,000 ft2 are `` improved . ''. About 3.2 acre of available space are added each year as active mining continues .. The mine naturally maintains temperatures between 65 and year-round .. The United States Postal Service and the United States Environmental Protection Agency lease spaces within SubTropolis , the United States Postal Service for its collectible stamp operations and the U.S. Environmental Protection Agency for their Region-7 Training and Logistics Center .. United States. United States. United States Postal Service. United States Postal Service. United States Environmental Protection Agency. United States Environmental Protection Agency. collectible stamp. Stamp collecting. U.S. Environmental Protection Agency. United States Environmental Protection Agency. Region-7. Region-7. Training and Logistics Center. Training and Logistics Center. On the north edge of the complex Hunt developed the Worlds of Fun and Oceans of Fun amusement park complex .. Worlds of Fun. Worlds of Fun. Oceans of Fun. Oceans of Fun. Hunt 's extensive business dealings in Clay County contributed to the Chiefs having their NFL Training Camp at William Jewell College in Liberty , Missouri until 1991 .. NFL Training Camp. NFL Training Camp. William Jewell College. William Jewell College. Other facilities like SubTropolis exist although not on the same scale , such as the abandoned mine in Butler , Pennsylvania used by Corbis and the US Federal Government for secure storage .. Corbis. Corbis. US Federal Government. US Federal Government. As the room and pillar mining method is used to extract limestone throughout the Midwest , many companies are looking at ways to utilize the hundreds of millions of square feet created in this manner for everything from mushroom farming to crude oil stockpiling .. room and pillar. room and pillar. mushroom. mushroom. crude oil. crude oil