Describes procedures for determination of manganese in supplementary cementitious materials for use with portland cement.RECONFIRMATION NOTICETechnical Committee BD-031 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 29 March 1998.The following are represented on Technical Committee BD-031:Amorphous Silica Association of AustraliaAsh Development Association of AustraliaAustralasian (iron