The company holds groundbreaking ceremony, marking the start of construction of its plasterboard plant. : USG Boral Building Products India Ltd, a plasterboard, metal, joint compound, putty and mineral fibre ceiling products company, plans to invest Rs 3 billion at Sri City. The company held a groundbreaking ceremony on Thursday, marking the start of construction of its plasterboard manufacturing plant in Sri City. The plant will be built on a plot of 24 acres at an initial investment of Rs 3 billion, will allow for 30 million square metre of plasterboard capacity in a standalone facility.