Asbestos, such as the asbestos tiles or asbestos rubber we commonly see, contains this material. They are either sealed in concrete or sealed in rubber. Therefore, when used in construction, they are harmless to people. But for their practitioners, it is possible to cause lung diseases, because asbestos fibers are very fine. What you see as an asbestos as thin as a hair is actually made of many asbestos twisted together. From this, you can see how fine it is. Therefore, after being broken, it will easily float in the air. If we live in an asbestos environment for a long time, we will inhale asbestos, thereby causing harm to the body.
And rock wool, different from asbestos, first of all it is a single solid fiber, and its diameter is relatively larger than asbestos. Even after being broken, it will not float in the air. Therefore, even if we stay in a rock wool environment for a long time, it will not cause any harm to our body. This is also why rock wool can be applied in various construction fields.
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