RT @USGSMinerals: USGS: US mines produced estimated $74.6 billion of raw mineral materials in 2016. USGS Pub https://t.co/DYYDjOkbwP via @U…
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RT @USGSMinerals: USGS: US mines produced estimated $74.6 billion of raw mineral materials in 2016. USGS Pub https://t.co/DYYDjOkbwP via @U…
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RT @USGSMinerals: USGS: US mines produced estimated $74.6 billion of raw mineral materials in 2016. USGS Pub https://t.co/DYYDjOkbwP via @U…
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RT @USGSMinerals: USGS: US mines produced estimated $74.6 billion of raw mineral materials in 2016. USGS Pub https://t.co/DYYDjOkbwP via @U…