Spray <a href="//commons.wikimedia.org/wiki/Fireproofing" title="Fireproofing">fireproofing</a> plaster in <a href="//commons.wikimedia.org/wiki/Canada" title="Canada">Canadian</a> highrise building.
<a href="//commons.wikimedia.org/wiki/User:Achim_Hering" title="User:Achim Hering">Achim Hering</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>