The number of recorded infections in the mining sector stood at 251 on 29 April, with increased testing producing strong rises in some mines.

By far the worst to date is Antamina in Ancash, controlled by BHP-Billiton and Glencore. Antamina is so far reporting 210 cases, with 600 tested and the programme of testing still in process. About 87% of those tested at Antamina were asymptomatic, a high-end result and one which complicates management of the situation.

Mining was given room for manoeuvre when the lockdown was first instituted, to allow for safe management of sites and maintenance of a minimal level of activity. Antamina cut its workforce to about 30% of normal, and boosted cleaning and health monitoring. The mining operation has now been fully shut down, with quarantining of all those cases detected.

Other mines report much smaller numbers, though without knowing the percentage tested, comparisons are difficult. The Cuzco region comes next after Ancash, with 18 cases at the Hudbay mine and eight at Antapaccay. Arequipa follows, with six at Bateas, a subsidiary of the Fortuna silver mine, and only one at Cerro Verde. Junín has four cases reported at Chinalco, and Pasco has two cases (the Tinka and Nexa mines), while Lima has two cases at the Impala minerals warehouse in Callao.