The article says: <i>There were still areas in that room that were .037 milligrams per cubic meter. </i><p>Wikipedia gives the following info:
<i>Chronic exposure by inhalation, even at low concentrations in the range 0.7–42 μg&#x2F;m3, has been shown in case control studies to cause effects such as tremors, impaired cognitive skills, and sleep disturbance in workers.</i><p>Even if the first number is as high as it is because they handled it, things like that they found it while sweeping the kitchen suggests that not all of it was sitting quietly somewhere, but was possibly disturbed regularly or even ingested. Given that mercury stays in the body for decades and is especially bad for children, that doesn&#x27;t seem like something one should risk.<p>(+ of course once the building is condemned, you can&#x27;t really say &quot;yeah, ok, no, we&#x27;ll risk it&quot;)