Twelve construction companies have been blacklisted for stranding and not completing development projects in time. The Public Procurement Monitoring Office in a notice today has banned the blacklisted companies from their involvement in the public procurement for a definite timeframe. The blacklisted companies include Bharat-Saptakoshi JV Kathmandu, Haigriwa-Siddhi Sai Prakash JV, Highway Construction Pvt. Ltd,