Utilize the input text as a context reference, choose the right relationship between 'Katanga Mining' and 'Glencore' from the options.
Options: owned by, product/material produced, distributed by, location of formation

Glencore said last month it would suspend production at its Katanga Mining (Toronto: KAT.TO - news ) unit for 18 months as it pursues an $880 million modernization project to lower costs.
owned by