Grenfell Tower

Five years ago Tuesday, a fast-moving fire destroyed a high-rise apartment building in London, called Grenfell Tower, killing 72 people. Pittsburgh-based corporation Arconic made the exterior cladding on Grenfell Tower that was a primary cause of the blaze.

By any reckoning, the 2017 fire at Grenfell Tower, in London, England, was a tragedy. Seventy-two died in the blaze. But in Pittsburgh, filmmaker Chris…