unit, the 11th (North-West) Battalion, Volunteer Defence Corps, and attained the rank of sergeant. On 4 August 1947, he married his second wife, Hope Margaret Nicholas, the mother of his only acknowledged child, Gina Rinehart. Lang and Hope remained married for 35 years, until her death in 1983 at the age of 66. In 2012, Hilda Kickett, who had long claimed to be Lang Hancock's illegitimate daughter, claimed that the late mining magnate had had an illicit affair with an Aboriginal cook on his property at Mulga Downs resulting in her conception. These claims have not been corroborated. Wittenoom Gorge As a child, Hancock showed a keen interest in mining and prospecting and discovered asbestos at Wittenoom Gorge at the age of ten. He staked a claim at Wittenoom in 1934 and began mining blue asbestos there in 1938 with the company Australian Blue Asbestos. The mine attracted the attention of national behemoths CSR Limited, who purchased the claim in 1943. Hancock retained a 49% share after the sale, but appears to have become quickly disillusioned about this arrangement, complaining that CSR viewed their 51% share as a licence to ignore his views. He sold the remainder of his claim in 1948. The mine would later become the source of much controversy, when hundreds of cases of asbestos-related diseases came to light. He was aware of the dangers of asbestos prior to selling his stake in Australian Blue Asbestos (as recently discovered papers have shown) but never accepted any liability, nor have his companies since his death. Neither the Australian federal government nor the Western Australian state government have pursued his companies for damages as of 2017. The Pilbara discovery On 16 November 1952, Hancock claimed he discovered the world's largest deposit of iron ore in the Pilbara region of Western Australia. Hancock said he was flying from Nunyerry to Perth with his wife, Hope, when they were forced by bad weather to fly low, through the gorges of the Turner River. In Hancock's own words, The story is widely accepted in modern descriptions of the discovery, but one biographer, Neill Phillipson, disputes Hancock's account. In Man of Iron he argues that there was no rain in the area of the Turner River on 16 November 1952 or indeed on any day in November 1952, a fact the Australian Bureau of Metrology confirms. Hancock returned to the area many times