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Hazen Research succeeded in purifying NGC spherical graphite up to 99.99%
OTTAWA, ONTARIO--(Marketwire - Nov 8, 2012) - Northern Graphite Corporation (TSX VENTURE:NGC)(NGPHF) is pleased to announce that ongoing metallurgical testing by Hazen Research has succeeded in purifying spherical graphite from the Bissett Creek deposit up to 99.99%....