 Bloomberg -- South Africas platinum and gold mines are facing delays in bringing back thousands of key migrant workers from neighboring countries, hobbling their efforts to ramp up output after a coronavirus lockdown.While the industry has been granted approval to bring back 12,432 workers from Lesotho, Mozambique, Eswatini and other nations in the region, mining companies are still awaiting final permission to proceed, according to the Minerals Council of South Africa. While those migrants only account for about 10 of the sectors 450,000-strong workforce, their skills are key to reviving the nations mines.Red tape has slowed the process, with government approval required for every worker, along with permission for bus routes and police escorts for transport back to the mines, said Nikisi Lesufi, an executive for the industry lobby group. South Africas borders also remain shut as part of measures to contain the virus, further complicating the logistics operation.We believed that they would give us a blanket agreement and workers would come back through normal processes, Lesufi said. All those processes delayed us, but at the moment, the only thing we are waiting for is the final go-ahead to proceed.More on South African migrant laborersMining companies may take until August to get all their employees back at work, said Henk Langenhoven, the lobby groups chief economist. While some miners have scaled up operations, capacity levels are still only slightly above 50 on average, he said.Producers are currently mining with about 272,000 workers, slightly more than half of their normal staffing levels, the council said.Producers including Anglo American Platinum Ltd. and Impala Platinum Holdings Ltd. have revised output guidance after shuttering mines during the lockdown and running at reduced capacity to comply with Covid-19 health protocols. Companies such as Sibanye Stillwater Ltd. and Harmony Gold Mining Co. have suspended output guidance.Updates with number of employees back at work in penultimate paragraphFor more articles like this, please visit us at bloomberg.comSubscribe now to stay ahead with the most trusted business news source.2020 Bloomberg L.P. 