One in three Appalachian coal miners surveyed by federal researchers are now testing positive for black lung disease, the highest level since the late 1970s.
Treatment ponds were the answer to a problem that briefly threatened the creation of the memorial itself. How they came to be still carries weight for the people involved in the work.
The Pennsylvania Department of Environmental Protection will conduct an expansive technical review of the Rustic Ridge coal mine, studying impacts to drinking water, wildlife, and tourism.
A treasure trove of coal history is being preserved in northeastern Pennsylvania. There are so many records, it will take at least a decade to archive it all.