With a tangle of wild, grey dreadlocks splashing out across his face as he bounces and sways like a man at sea, Billy Ocean does look an awful lot like the betentacled character from the Pirates of the Caribbean films.

Their croppings are either entirely barren or contain only a moderate amount of copper, but much richer ore is ordinarily found just above the chalcocite zone.

The books were sorted by title, but I'm going to reorder them by author's surname.

The corrective feedback mechanism cancels out the noise.