South African exports still constrained amid Covid-19 restrictions Shipments of metals, ores and alloys from South Africa in the week to Thursday January 14 were still subject to delays and logistical disruptions caused by Covid-19-related restrictions. Chrome deliveries to the port of Maputo in Mozambique have been severely disrupted over the past two weeks amid queues as long as 25km at Lebombo, a major land border crossing. And the cobalt intermediates payable soared to a record high due to congestion at land borders in South Africa, where most cobalt that is mined in Democratic Republic of Congo (DRC) goes to be shipped.