Which of the following is not a recommended asbestos handling technique?

Wetting materials to minimize dust, employing high-powered vacuum systems, and using barriers to contain asbestos fibers are all recommended techniques when handling asbestos. These methods effectively reduce the risk of airborne asbestos fibers, which can pose significant health risks.

Wetting materials helps to prevent the release of fibers into the air, as moisture binds the fibers and keeps them from becoming airborne. High-powered vacuum systems designed specifically for asbestos cleanup can filter out asbestos particles and reduce exposure risks during removal operations. Barriers are important in containing asbestos fibers within a designated area, preventing them from spreading to other parts of a building or site.

In contrast, dry sweeping contaminated areas is not advisable because it can disturb asbestos debris and release harmful fibers into the air, increasing the risk of inhalation for workers and anyone nearby. Therefore, the correct choice is the approach that does not follow accepted safety practices when managing asbestos.