Circular issued by International Group clubs   Executive Summary As Members have previously been informed, a new iron ore fines (IOF) Schedule to the International Maritime Solid Bulk Cargoes (IMSBC) Code governing the carriage of IOF by sea, and an amended iron ore Schedule, were agreed at the IMO DSC 18 meeting in September 2013, subject to final approval by the IMO Maritime Safety Committee at its 95th session in 2015.  In accordance with the attached recently issued IMO circular DSC.1/Circ.71, which contains these changes to the Code, both Australia and Brazil have now given early effect to the new Schedule.  As a result, certain IOF cargoes exported from these two jurisdictions are now reclassified as Group A cargoes under the Code (cargoes which may liquefy if shipped at a moisture content in excess of their Transportable Moisture Limit (TML)), depending on the characteristics of the material.  This circular explains the criteria determining the classification of the cargo for the purposes of the IMSBC Code and the subsequent certification and declaration requirements of the shipper. Introduction The new IOF Schedule was presented to the IMO DSC meeting as a joint proposal by the Governments of Brazil and Australia and was supported by an industry group[1]  led by the International Group of P&I Clubs.  The Schedule is the product of a wide ranging research project undertaken by Rio Tinto, BHP Billiton and Vale which analysed the behaviour of IOF cargoes carried by sea. The research was independently reviewed by Imperial College, London and Minton, Treharne and Davies (MTD), in order to ensure that the basis for the Schedule was based on sound and impartial scientific research. The International Group co-ordinated the Imperial College/MTD review of the research work and also led the industry representation on this matter.  The Schedule will be mandatory in all SOLAS States Parties from 1 January 2017, but the IMO circ