Australia's wealthiest person Gina Rinehart must part with some of her riches, a court has ruled in a high-profile dispute over her mining empire. Worth an estimated A$38bn (£20bn; $27bn), Rinehart inherited the iron ore ventures of her father in 1992, before going on to develop mines in the mineral-rich Pilbara region of Western Australia (WA). Two of her children and the heirs of her late father's business partners argued they were entitled to a significant share of royalties and mining rights. On Wednesday, more than 13 years after the legal battle began, a Supreme Court judge ruled that Rinehart must pay past and future royalties to her rival heirs but that the mining rights remain hers. The legal battle centres around Hope Downs, one of Australia's largest and most lucrative iron ore projects. The court heard Rinehart's father Lang Hancock and his business partner Peter Wright - who were considered iron ore pioneers in WA - drew up an agreement to manage their joint interests under a business called Hanwright. During the 51-day trial in 2023, Wright's children argued that Rinehart had breached that agreement, and owed them mining rights and royalties stemming from Hope Downs, a site jointly operated by global mining giant Rio Tinto and Hancock Prospecting, which last year tipped A$832m into Rinehart's company's coffers. Rio Tinto pays 2.5% in royalties to Hancock Prospecting, with Justice Jennifer Smith ruling half belongs to the Wright family. Wright Prospecting won half of its case, lost half of its case, and Hancock Prospecting... has won and lost half of its case, Smith said. The case also involved Rinehart's children, Bianca Rinehart and John Hancock, who claimed their mother moved mining rights from a family trust, denying them access. Although the court denied their claims, some royalties from Hope Downs for the family of late engineer Don Rhodes were partially granted. Hancock Prospecting welcomed the court's decision, asserting the ownership of Hope Downs, while a spokesman for Wright Prospecting expressed satisfaction with the ruling.