Synthetic mineral fibers are fibrous inorganic substances made primarily
from rock, clay, slag, or glass. These fibers are classified into three general groups:
fiberglass (glasswool and glass filament), mineral wool (rockwool and
slagwool), and
refractory ceramic fibers (RCF). There are more than 225,000 workers in the
US exposed to
synthetic mineral fibers in manufacturing and end-use applications.
The following questions link to information relevant to synthetic mineral fiber
hazards in the workplace.
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