July 20 (Reuters) - Precious gem producer Gemfields GMLJ.JGEMGE.L on Wednesday reported an attack close to its ruby mine in Mozambique's northern Cabo Delgado province, but said operations had not ...

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Gemfields Group said that a group of illegal miners had invaded its Montepuez ruby mine in northern Mozambique and killed two police officers guarding the site. "A group of approximately 40 illegal ...

The Ruby Mine near the headwaters of Lincoln Creek is one of 148 sites in Colorado where draining mines “likely impact water quality” and have no active water treatment, according to information ...