Delegation of investigation and adjudication powers: Collector granted authority to act nationwide for assigned cases. The Central Board, relying on statutory authority and applicable rules, invests the Collector of Central Excise, Madras, with the powers of a Collector of Central Excise to investigate and adjudicate, throughout the territory, but only in respect of cases assigned to him by the Board; the grant confers equivalent investigatory and adjudicatory powers subject to assignment-based limitation.