Mackintosh Burn emerges as L1 bidder for implementation of WSS in Purba Medinipur, West Bengal June 19, 2023 | Awarded, Key Segments, Municipal Water Supply, Project Updates, Water Supply Mackintosh Burn Limited has emerged as the lowest (L1) bidder for implementation of the water supply scheme (WSS) in Moyna and Contai-I block of Purba Medinipur district. This content is restricted.