Batchit, Arizona : the rise and fall
(Book)

"Thousands of years in the making, the Bat Cave gave rise to multiple efforts by adventurous miners to remove the cave's treasure: bat guano. The Batchit, Arizona story chronicles the early attempts of extracting the guano for commercilization with special attention on the audacious and extensive mining operation that created the outpost of Batchit, Arizona, and the "Marvel of Modern Engineering." This is the story of those men who made that mining operation work, transporting the miners along what was then the longest aerial tramway in the world, swinging in the Bat Car thousands of feet above the Grand Canyon and the Colorado River to collect the "brown gold" hidden in the recesses of an almost inaccessible cave" -- Cover, p. [4].