The battle over the management control of BSL, formerly Bhilwara Synthetics, intensified today with both the parties - the Jhunjhunwala-Churiwal combine, promoters of BSL, and the raider, the Sardas - scaling up their holdings in the company through market operations. The Sardas today also reaffirmed their intention to come out with an open offer to garner additional 20 per cent stake in the textile company. Ghanshyam Sarda of the Rs 1,500-crore group, said they would