In Europe, people work in inhumane conditions at data center construction sites of American technology companies, according to a joint investigation by the Guardian newspaper and European Research. At a Google facility in Belgium, a worker suffered burns on 12% of his body. Two deaths were reported in the UK, including at a Microsoft data center substation site. In Sweden, where a cluster of Microsoft data centers was built, workers complained about the living conditions: unsanitary conditions, lack of heating in winter and poor ventilation. A worker from Romania was diagnosed with tuberculosis, which his colleagues soon contracted.