asbestos
Last spring towards the end of last year's school term a pipe burst in Greenfield School and drywall had to be replaced. A third party was contracted to finish the work and while doing so they failed to do proper asbestos remediation and as a result some asbestos dust escaped into a confined area. Air quality tests have since been conducted and the school has been determined to be safe.
Greenfield School like many schools in Edmonton, across Alberta and all of Canada were built when asbestos was widely used and before its dangers were known. If and when left undisturbed it remains unharmful and removing it would cost billions of dollars.
Hardly a day goes by on some USA TV channels when you don't see an advertisement about some "class action lawsuit" being filed against a company whose employees were exposed to the dangers of working with asbestos. For years asbestos was used in many applications until it was recognized to be the health hazard it is. The article below is well worth reading especially if you or someone you know was exposed to asbestos.
Asbestos is a mineral fiber that was once commonly used in the manufacturing of building materials. It was prized for its durability, heat resistance, and sound absorption properties. However, asbestos is now known to be a dangerous carcinogen that can cause serious health problems if it is inhaled.