Two of Gina Rinehart's Northern Territory cattle properties have sold for a combined total well in excess of $60 million. Key points: Two of Gina Rinehart's NT cattle stations have been sold Willeroo was bought by the NT's Brett family SA's DiGiorgio family bought neighbouring Aroona Station The Northern Territory's Brett family has purchased the 171,000-hectare Willeroo Station, 125 kilometres …