What is the primary danger of disturbed friable asbestos?

The primary danger of disturbed friable asbestos is the release of airborne asbestos fibers. Friable asbestos refers to materials that can easily crumble or break apart, allowing microscopic asbestos fibers to become airborne. When these fibers are inhaled, they pose serious health risks, including lung diseases such as asbestosis, lung cancer, and mesothelioma.

In situations where friable asbestos is disturbed, such as during renovations or demolition activities, the likelihood of fiber release increases significantly. This aspect is crucial because the inhalation of these fibers can lead to long-term health issues and is why protective measures and regulations are strictly enforced in environments where asbestos is present.

The other options, while they may have validity in certain contexts, are secondary to the immediate health risks posed by airborne fibers. Structural instability pertains more to the integrity of the building rather than the immediate danger of asbestos exposure. Damage to surrounding materials and costs associated with cleanup, though relevant concerns in handling asbestos, do not encapsulate the primary health risk that comes directly from the disturbance of friable asbestos.