Mining billionaire GinaRinehart wants to be able to land helicopters on the roof of her corporate HQ, and says the noise experienced by nearby residents would be similar to using a coffee machine or blender ... .
... in the growing battery minerals market.Net worth of GinaRinehart According to reports from Forbes, the richest woman in Australia is Gina Rinehart, who has an estimated net worth of $25.3 billion.