Not only does this dust contain hydrocarbons, but also blastomychosis, aspergillosis, and other fungal spores. These fungal spores are harmless until released into the air and inhaled by humans. Severe lung infection results. Humans must be treated with costly and dangerous drugs such as Itraconazole. Untreated, these fungal agents slowly consume body tissues, similar to cancer.
Painful death can result from lung decay, heart attack or other organ failure.
Additionally, the old railroad grades in the Northwoods were built with crushed mine rock from local iron mines. This rock contains concentrations of iron ore and other heavy metals, such as mercury. Hydrocarbons, PCBs and pesticides are also present. The grades posed little hazard when used by the trains. Oak railroad ties supported the steel rails so the trains never physically disturbed the bed material.