During its coal burning years, the plant could consume up to a 70-ton hopper car of coal per day, delivered by the Pittsburgh Junction Railroad (now in the P&W Subdivision of CSX) that ran through Junction Hollow next to the plant. The plant's small 1942 Plymouth DE 25T locomotive[3] would shuttle the cars between the siding and the plant via a wooden trestle bridge[4] (demolished 2012) spanning Boundary Street.
Chabon may have coined the name "Cloud Factory" himself, or heard it first from locals before employing it to great effect in his novel. It is also possible that he may have borrowed the phrase from Henry David Thoreau's essay Ktaadn and the Maine Woods,[6] which was first published in five serialized installments in Sartain's Union Magazine in 1848. The piece describes a transcendental, "mountain-top" experience Thoreau had in the summer of 1846 while hiking Mount Katahdin in Maine:
Sometimes it seemed as if the summit would be cleared in a few moments, and smile in sunshine; but what was gained on one side was lost on another. It was like sitting in a chimney and waiting for the smoke to blow away. It was, in fact, a cloud factory—these were the cloud-works, and the wind turned them off done from the cool, bare rocks.
References
^Chabon, Michael (1988). The mysteries of Pittsburgh (1st ed.). New York: W. Morrow. ISBN0-688-07632-7.