Metal Evolution
Steel Development is a 2011 documentary series directed by anthropologist and film-maker Sam Dunn as well as supervisor, manufacturer and music manager Scot McFadyen about heavy metal subgenres, with new episodes airing every Friday at 10pm EST on MuchMore and Saturday at 10pm EST on VH1 Traditional. Its beginnings originate from Dunn's first docudrama Steel: A Headbanger's Trip, which included the well-known "Heavy Metal Ancestral Tree."