GRAND RAPIDS, Mich. (WOOD) — A team of researchers led by a University of Michigan archaeologist has found a hoard of gold ...
Searching for gold in America with a metal detector is a favorite pastime for thousands who dream of striking it rich.
A research team including a University of Michigan scientist ... temperatures as found at a depth of 50 to 80 kilometers (or 30 to 50 miles) beneath active volcanoes causes gold to be transferred ...