Assertion: manganese | /r/HasProperty | aal
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Source sentences:
text: Majors including Ferroglobe PLC (NASDAQ: GSM), a leading producer of manganese, Anglo American PLC (LSE: AAL), a large miner of manganese worldwide, and Glencore PLC (LSE: GLEN), a highly diversified company that produces significant manganese, have all moved to expand manganese resources this year.