Revised in February 2018, this is a map illustrating the open and closed blocks as well as the oil wells and fields of Guinea, Guinea-Bissau, Sierra Leone and Liberia. This map also indicates five Fourth round contract areas off the coast of Sierra Leone. Open and licensed acreage is shown, with block operators marked. Associated downstream infrastructure is included such as oil refineries and tanker terminals as well. The map is a PDF file, made using eps graphics, meaning that there is no loss of resolution as the file is enlarged. Price: £70 or available as part of a full subscription.