(ShareCast News) - Anglo American chief is reportedly considering the disposal of the group's niobium and phosphates business, worth £1bn.Mark Cutifani is believed to have contacted advisers about the move, which is still a few months off, the Sunday Times wrote.The 57-year-old is facing the huge task of reducing Anglo's debt as it battles against sliding prices.Cutifani has already raised $2bn from a number of sales including its Chilean copper mines and platinum operations in South Africa.