Refer to the input text as context and select the correct relationship between 'Katanga Mining' and 'Glencore' from the available options.
Options: location of formation, position held, parent organization, original broadcaster

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.
parent organization