In May 1955, Ernest Oppenheimer opened the new headquarters which combined the operations of Anglo American and the De Beers group. After Ernest died in November 1957, he passed on the operations of Anglo and De Beers to his son, Harry Oppenheimer. Under Harry, the company expanded to several different countries around the globe, including Canada, Australia, Malaysia, Portugal, Zambia, and Tanzania. In South Africa, Harry opposed apartheid, arguing that it hindered economic growth. Of course, they were blamed anyway, for De Beers has been criticized for profiting from the system during the apartheid period. By 1973, Anglo and De Beers accounted for 10 percent of South Africa's gross national product and 30 percent of the country's exports.