For much of the 1900s, factories across the United States used asbestos in everyday equipment and building materials. Companies chose asbestos because it handled heat, fire and wear better than most alternatives at the time.
Moreover, factory owners relied on it to protect workers from burns and reduce fire risks, even though most workers received no warning about the danger of breathing in asbestos fibers.
Asbestos in factory machinery
Many factory machines contained asbestos parts that workers handled every day. These materials often wore down during normal use or broke apart during repairs, which released asbestos fibers into the air. Maintenance workers faced higher exposure because repairs disturbed old materials.
Common machinery uses included:
- Gaskets and seals in pumps, valves and compressors
- Brake and clutch parts in industrial vehicles
- Insulation around motors, turbines and generators
- Heat shields inside furnaces, kilns and ovens
This meant that workers could breathe in asbestos fibers during routine tasks, long before anyone recognized the serious health risks tied to repeated exposure.
Asbestos in factory insulation
Factories also used asbestos to insulate entire buildings, not just machines. Workers often spent full shifts surrounded by asbestos-containing materials.
For example, some companies wrapped steam and chemical pipes with asbestos insulation. Boilers relied on asbestos coverings to hold in heat. In addition, ceilings, walls and support beams often contained asbestos-based insulation or sprayed fireproof coatings that released fibers as they aged or cracked.
Long-term exposure and risks to family members
Asbestos exposure in factories usually happened slowly over time. Many workers inhaled fibers for years without knowing it. Exposure often increased during equipment repairs, plant upgrades and building renovations. However, symptoms and illnesses, such as lung cancer in the form of mesothelioma, may not appear for 20 to 50 years. This often makes it difficult to connect illness to factory work from decades earlier.
Furthermore, workers often carried asbestos dust home on their clothes, shoes or hair. Family members could breathe in these fibers while handling laundry or sharing living spaces. This secondary exposure has caused serious illness in spouses and children who never worked in factories.
Why understanding exposure matters
If you worked in a factory years ago, learning how asbestos was used can help you understand possible health risks today. Clear information can help you take the next steps for your health and your family’s future.