S. 44BB : Mineral oils-Computation-Presumptive tax-Non-resident having Permanent Establishment in India-Income from contracts for processing of marine seismic data, seismic data acquisition and processing, hiring of vessel and technology-Taxable on presumptive basis-Advance tax-Non-resident not chargeable with interest. [ S. 9(1)(vii) , 44DA, 234B ]