Mammoth Cave Saltpeter Works is the epic story of enterprising young frontiersmen whose fortunes were made in one of the largest nitrate mines in America. It chronicles the last six years (1810-1816) of pioneer saltpeter mining and business history in the world's longest cave. Mammoth Cave achieved fame during the War of 1812, as the preeminent saltpeter factory in the nation, and international fame with the discovery and exhibition of prehistoric Indian mummies dug up by the saltpeter miners. Tourists began visiting the cave in 1816, the nations second oldest commercial cave. Mammoth Cave...