Mercury Seven summon the last group. The tests included spending hours on treadmills and tilt tables, submerging their feet in ice water, three doses of castor oil, and five enemas. Six candidates were rejected as too tall for the planned spacecraft. Another 33 failed or dropped out during the first phase of exams. Four more refused to take part in the second round of tests, which eliminated eight more candidates, leaving 18. From the 18, the first seven NASA astronauts were chosen, each a "superb physical specimen" with an IQ above 130, and the ability to function well both as part of
Seven Group Holdings Yahoo!7, founded as a cross-media entity which would expand the content distribution networks of both companies. On 22 February 2010, it was announced that WesTrac would merge with Seven Network Limited, and the combined entity was renamed "Seven Group Holdings". In April 2011, Seven Media Group was acquired by West Australian Newspapers Ltd to create Seven West Media Ltd. Seven Group Holdings remains Seven West Media's largest shareholder, with a 33.2% stake. Seven Group Holdings Seven Group Holdings Limited (SGH, formerly Seven Network Limited) is an Australian diversified operating and investment group in the media, mining and construction industries. Seven