South Africa’s biggest labour union federation urged local shareholders, including the powerful Public Investment Corporation (PIC), to oppose BHP Group’s bid to buy Anglo American. The Congress of South African Trade Unions (Cosatu), which includes the National Union of Mineworkers (NUM) among its members, said a deal wouldn’t be in the national interest. South African shareholders hold about 26% of Anglo, with the PIC owning 8.4%, according to data compiled by Bloomberg.