Britain's FTSE 100 index is seen opening 46 points higher at 7,623 on Tuesday, according to financial bookmakers. * FAROE PETROLEUM: Norwegian oil firm DNO on Monday withdrew its request for seats on the board of Faroe Petroleum amid an escalating war of words between the two companies. * MELROSE INDUSTRIAL: British turnaround firm Melrose Industries Plc's plans to divest one of its U.S.-based units fell through, The Times reported http://bit.ly/2wixBw0 on Tu