Complex sentence: The major industry in the Marcona District is the Marcona Mine and open-pit iron mine acquired in 1992 by Shougang Corporation a state owned Chinese corporation which does business locally as Shougang Hiero Peru.
Split into simpler sentences: The major industry in the Marcona District is the Marcona Mine, an open-pit iron mine. The mine was acquired in 1992 by Shougang Corporation a state owned Chinese corporation which does business locally as Shougang Hiero Peru.