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Someone at work got a new office. He decided he wanted a second door and tunneled through the wall to make it.
(hexbear.net)
This wall was to the supply room with all of the uniforms and PPE. The building was constructed in the mid-20th century so it turns out it's full of asbestos. Thanks mole man.
Asbestos still accounts for the majority of workplace related injury and death at least here because of the long delay (10-50 years) between exposure and asbestosis/mesothelioma