For example, the Welsh Ministers must provide written consent before any drilling can commence, before any petroleum can be produced, or before the licence can be transferred to another company.
Er enghraifft, rhaid i Weinidogion Cymru roi caniatâd ysgrifenedig cyn y gellir dechrau unrhyw ddrilio, cyn y gellir cynhyrchu unrhyw betrol a cyn y gellir trosglwyddo'r drwydded i gwmni arall.