By Nelson Banya (Reuters) – South African authorities shut down the Jagersfontein diamond tailings dam in 2020 due to high water levels before allowing it to reopen last year, a company official said on Monday, a day after the dam burst, killing at least one person and injuring 40. Sludge flooded out of the tailings dam on Sunday morning, sweeping away houses and cars in Jagersfontein in the Free State province, 514 kilometres southwest of Johannesburg. Tailings dams – large embankments built to store mine waste – have caused numerous environmental disasters, most notably in Brazil in January …