The US state of North Dakota ordered a mandatory 14-day quarantine for all 900 employees at the GE-owned LM Wind Power turbine blade plant in Grand Forks after 110 including some of “their close contacts” tested positive for coronavirus, according to Governor Doug Burgum.

The quarantine is believed to be the largest imposed on employees at a US wind supply chain facility workforce since the country’s first case of Covid-19 three months ago, and further stoked concerns within the industry over availability of critical components later this year as workforce contagion spreads.