Samples and associated geological data are held at the British Geological Survey for Maritime Coastguard Agency (MCA), Civil Hydrography Programme (CHP), Bathymetric Survey HI1425; DWR via DR1 - Welland Field, Area in SqKm: 478, (01/05/2014 to 01/06/2014), Standard: IHO S44ed5 Order 1a. Contract: Medium. FY 2014/15. Contractor: MMT UK.