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Workers wearing protective face masks to respect the hygiene measures recommended by the Swiss authorities as a precaution against the spread of the the coronavirus COVID-19 remove geothermal drilling tubes, in Geneva, Switzerland, Monday, April 27, 2020. The Swiss authorities partly lifted the lockdown allowing people to reopen their shops and construction sites after more than one month and a half of closing due to the coronavirus COVID-19. (KEYSTONE/Salvatore Di Nolfi)