"… e ground in search of what industry experts call “vitamins” for global high-tech manufacturers of microchips and controls that enhance growing numbers of smart phones an …"

"… ombia are making their way into the legitimate flow of minerals that feeds high-tech manufacturers. Illegal mining and smuggling have led to human-rights abuses against vuln …"

"… t he calls “black pebbles” — stones laced with minerals important to high-tech manufacturers worldwide.Over the last couple of years Ramón has labored at small, out-o …"

"… ed with legitimate minerals in smelters around the world, and then sent to high-tech manufacturers.Alarm bells in WashingtonThere is concern that while there’s a regulator …"

"… lot might yield other minerals like tin or titanium ore — also wanted by high-tech manufacturers — so a new mine attracts dozens of would-be prospectors.One lucky miner …"