Philip Marsden: Under a Metal Sky review - rock and awe
Myths, mines, and mankind combine in this wide-eyed reading of the earth beneath our feet
Working on materials was basic to human culture from the start: chipping at flint to make a hand-axe; fashioning bone or wood; drying hides. In time, people discovered that some materials, especially when put to trial by fire, were special: harder, shinier, more attractive, or more deadly.