Disputes arose between the Government of India and Vedanta Limited, Ravva Oils (Singapore) Pte. Ltd. and Videocon Industries Limited (" Respondents ") under a Product Sharing Contract (" PCS ") which provided for development to be carried out in terms of a 'Ravva Development Plan'. The crux of the dispute was in respect of costs incurred by the Respondents for the petroleum operations and the monies to be received by the Government of India under the PCS.