By Reuters Staff2 Min ReadFILE PHOTO: Police vehicles are seen by an unused mine where people have been killed by a gas explosion in South Africa's eastern province of Mpumalanga, South Africa February 7, 2019.... REUTERS/ Siphiwe Sibeko/ File Photo JOHANNESBURG( Reuters)-South Africa’s mines recorded 32 deaths in the first half of 2021 compared with 24 during the same period in 2020, the mines ministry said on Thursday, continuing a spike in deaths which began last year in some of the world’s