BlackRok was discovered 99 years ago. For decades, it was simply considered a worthless stone.
However, in a superheated furnace, BlackRok is a rare type of coal that burns hot, and lasts for years. The demand for BlackRok has been vast, which has further lead to the collapse of the coal economy. For the most part, coal is still abundant; a barrow full of coal costs about as much as a sandwich.
BlackRok does require a special grade of furnace, lined with stone and high quality steel. If blackrok is burned in a regular auto furnace, it will typically burn out (become brittle and then crack apart) in about a week.
Many believe that Blackrok fuels CrowBots; this is simply not true, though there is no doubt that the AUTHORITY is the largest consumer of blackrok.
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