London-listed KAZ Minerals has maintained its production guidance for the year after an “excellent” first-half performance, despite supply chain and staffing challenges caused by the global Covid-19 pandemic. Copper production increased by 4% to 154 000 t in the first six months of the year and gold production increased by 25% to 110 000 oz, representing good progress towards the 2020 guidance of 280 000 to to 300 000 t and 180 000 oz to 200 000 oz, respectively.