"The energy needs of the Industrial Era fueled the search for underground coal. Coal was mapped and surveyed so that it could be located, dug up, and consumed. Lacking advanced “seeing” technology such as GPS mapping and LiDAR, 19th- and 20th-century surveyors’ work is based on direct but coarse-grained observational data. Lack of specificity invites us to imagine underground coal as something else: a co-habitant of Earth, whose material and location are primarily unseen."
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Report to the Legislature of Pennsylvania, Containing a Description of the Bear Valley Coal Basin (Harrisburg, 1839).









