04 Feb 2019 --- The US agriculture sector is thawing out after the US polar vortex impacted parts of the US farm belt, with the deep cold forcing farmers to brave the elements over the past few days to look after livestock and cattle in the dangerous freezing conditions. As arctic weather gripped the Midwest, Cargill temporarily closed all its grain plants and meat processing companies have been taking extra safety precautions so farms and facilities remain operational.