More than a tenth of Poland's confirmed COVID-19 cases recorded since the beginning of the outbreak have occurred at coal mines with a rapid acceleration reported this past weekend.

Coal mining company JSW said on Monday that 2,771 COVID-19 infections had been detected at its Polish mines...

A spike of cases was detected over the weekend with 1,151 new infections reported between June 5 and June 7, the Health Ministry said on Twitter.

Of these new cases, 558 were observed at the Zofiowka mine alone, the ministry noted.

JSW announced in a statement last week that it was collaborating with local health authorities to drive so-called swab buses to employees' houses in order to test them...

The mining sector in the country was hit hard by the pandemic with output falling. PGG, a state-run mining company, was forced to temporarily shut down some sites in May as the number of infections grew. Operations resumed last week...

PGG is now testing 4,000 people at another mine.