Documents (4) Gebr. Knauf KG and USG Corporation – Clearance determination – 18 April 2019pdf - 432 KB | Published on July 15 2019Gebr. Knauf KG and USG Corporation – Letter of Issues – 13 March 2019pdf - 995 KB | Published on March 13 2019Gebr. Knauf KG and USG Corporation – Statement of Preliminary Issues – 9 January 2019pdf - 146 KB | Published on January 09 2019Gebr. Knauf KG and USG Corporation – Clearance application – 20 December 2018pdf - 629 KB | Published on January 08 2019