Analyze the relationship between 'Glencore' and 'Katanga Mining' within the context of the input sentence.
Options: operator, headquarters location, member of, owner of

However, the industry's chamber of mines, said that production would drop below 1 million tonnes due to Glencore (Xetra: A1JAGV - news ) 's suspension of operations at its Katanga Mining (Toronto: KAT.TO - news ) unit, one of Congo's largest copper mines.
owner of