Independent witnesses-Non – association of, contention with regard to non – association of independent witnesses with the search and recovery, held, cannot be raised in the face of S. 25 of CNS Act, 1997 which has categorically excluded application of S. 103, Cr. P. C. to the searches, made under this Act-Held further: It is a settled principle of construction of statutes that when in an enactment a special procedure has been laid down and a special provision has been made on a particular subject than a general provision does not apply to that subject.