GreenRoc Mining plc reported purity of 99.97%, exceeding electric vehicle industry requirements, from tests on spheronised graphite produced from its Amitsoq project in Greenland. ALKALINE TESTS Technical consultants ProGraphite GmbH conducted alkaline purification using sodium hydroxide to test a sample from the lower graphite layer (LGL), successfully spheronised last autumn. The purity requirement is 99.95% […]