Introductive takeaway: carbon black pneumoconiosis (blackplatinumpneumoconiosis) because of long-termand inspiratoryhigh concentrations of carbon black dustcauseda pneumoconiosis.
Extracting platinum from this dust (e.g. for use in fuel cells for hydrogen cars), which originates in catalytic converters, might prove lucrative and would expand the limited amount of platinum available, which does not meet even present demand for it.