Which type of asbestos fiber is the most difficult to keep wet and control?

The most difficult type of asbestos fiber to keep wet and control is crocidolite. Crocidolite, often referred to as blue asbestos, is known for its fine, needle-like fibers that can easily become airborne. These fibers are not only hazardous due to their small size and durability but also because they do not absorb water well. This hydrophobic nature prevents effective wetting, which is a necessary safety measure in handling asbestos since keeping fibers wet can help to minimize the risk of airborne particles.

Amosite, while also hazardous, tends to have more manageable fiber characteristics compared to crocidolite. Chrysotile, which is white asbestos, is the most commonly used form and is generally easier to keep wet. Anthophyllite is less commonly encountered in industrial settings, and while it can present risks, it does not have the same challenges with moisture retention as crocidolite. Therefore, the unique properties of crocidolite make it particularly difficult to control and wet effectively during asbestos remediation and handling activities.