Big 5: USG Boral completes 60mn Oman gypsum plant ...
· Salalah venture was undertaken with the Sultanate's Zawawi Group and also includes a gypsum mine. Big 5: USG Boral completes 60mn Oman gypsum plant. big 5, Business, gypsum, NEWS, USB Boral, USG Boral Building Products, USG Corporation. Business.