Sept 15 (Reuters) - PolyMet Mining Corp
* PolyMet reports second quarter fiscal 2018 results
* PolyMet Mining Corp - also agreed to issue up to an additional $20 million secured debenture to Glencore AG, a wholly owned subsidiary of glencore plc
* PolyMet Mining Corp qtrly loss per share $0.01 Source text for Eikon: Further company coverage:
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