Following the deadly June 14 London Grenfell Tower fire that has killed at least 79 people, a nationwide investigation determined that dozens of U.K. high-rise buildings are potentially unsafe.

On their exteriors, all use an aluminum composite material (ACM) similar to the 24-story Grenfell Tower’s rain-screen cladding system. London’s metropolitan police department has signaled that it may file manslaughter charges in connection with the disaster. In the U.K., a corporation can be prosecuted for manslaughter.