Glass companies suspend production

摘要

A second company in Portland, Oregon, has voluntarily suspended using cadmium to make colored glass, days af-ter state environmental regulators released a map showing high concentrations of the carcinogenic metal were found nearby. Uroboros Glass, which manufactures colored glass used in art, sits on the fringe of one of two cadmium hotspots in Portland. Federal scientists studying metal concentrations found in tree moss made the discovery last year, detecting levels of cadmium that far exceeded state safety targets.