How does Gina Rinehart, like her father before her, use wealth and power to influence politics? Rinehart’s first major foray into the political spotlight was successfully lobbying against Labor’s mining super profit tax during the early 2010s. But what did she learn from Lang Hancock, who campaigned to overturn the iron ore export embargo in the 1950s, setting the foundation for their family fortune? Listen to all the episodes of Gina at theguardian.com/gina