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 Address to refer: https://www.researchchannel.co.za/article/black-rock-produces-ultrahigh-grade-graphite-concentrate-2018-05-08
 Article Headline: Black Rock produces ultrahigh-grade graphite concentrate
 Abstract: Graphite focused Black Rock Mining has delivered the world’s first 99%+ purity graphite concentrate at its pilot plant in Canada, from ore mined at its Mahenge graphite project, in Tanzania. “We are not aware of any deposit that is capable of producing 99.3% grade concentrate by standard flotation alone. Being able to generate ultra-high grade product using flotation is of significant value to downstream processors who are increasingly finding environmental constraints impacting their business,” said Black Rock CEO John de Vries.
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