37-year-old letter threatens to blow open Rinehart rights case

After decades in the making, the heavily-reported court case between the family of mining magnate Peter Wright and Gina Rinehart might might be turned on its head by an almost 40-year-old letter from Lang Hancock to his daughter. During the document-swapping requirements prior to the case, the letter was uncovered as part of the action between Rinehart and her own son, John Hancock.See omnystudio.com/listener for privacy information.