The break did not release any asbestos fibers, officials said.

The most dangerous asbestos fibers are too small to be visible.

Generally, material in good condition will not release asbestos fiber.

The asbestos fibers struck a wide amount of municipal news and media.

Asbestos fibers are so small you can't see them.

All types of asbestos fibers are known to cause serious health hazards in humans.

Asbestos fibers pose a danger only when released into the environment.

"There is no medical test available to determine whether you were exposed to, or have, asbestos fibers in your lungs."

Any disturbance could potentially release asbestos fibers into the air.

Some particles, like asbestos fibers, stay in the lung forever.