The history of gold mining in Ethiopia stretches back more than three millennia, when the precious metal was excavated and transported to Egypt for the

 Darren Bogu Speaking with many opal vendors at Tucson this year, Shop LC learned that a growing number of opal miners are making the switch

Discovered during the 1980’s in the course of gold-bearing exploration in the Adola Belt. A detailed geological exploration program uncovered several rare-element pegmatites with the

Abstract Tantalum, considered one of the critical elements by many countries, is a widely used metal in industries such as electronics, aerospace and automotive. The