Mining and Heavy Industries Boral sells billion-dollar stake in joint venture Boral is set to sell its 50 per cent stake in the US Gypsum (USG) Boral Joint Venture to Knauf for $1.4 billion, including the plasterboard based businesses in Australia, New Zealand, Asia and the MiddleRead More Staff WriterNovember 2, 2020, 12:00 pmNovember 2, 2020