Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1272; Cross Sands (Overview), Area in SqKm: 78, Standard: Reconnaissance. Focused Middle Cross Sand, Area in SqKm: 4; Focused South Cross Sand, Area in SqKm: 3, (23/05/2008 to 03/06/2008), Standard: IHO S44ed4 Order 1. Contract: RRS (2006 LT). FY 2008/09. Contractor: MMT.