by: Neil Gough | New York Times

HONG KONG — The Australian mining billionaire Georgina Rinehart has threatened to sell her recently acquired 19 percent stake in Fairfax Media, sending shares in the Australian publisher tumbling on Tuesday.

The announcement is the latest volley in her battle to win seats on the board of the company, which publishes leading newspapers including The Sydney Morning Herald, The Australian Financial Review and The Age. Mrs. Rinehart, who is known as Gina, is the richest woman in Asia.