Foreword • Editors' note • Members of the Working Party • Acknowledgements • Preface • List of symbols and units • Introduction • The composition of clay materials • Formation and alteration of clay materials • Properties of clay materials, soils and mudrocks • World and European clay deposits • British clay stratigraphy • Exploration • Compositional and textural analysis of clay material • Laboratory testing • Earthworks • Earthmoving • Specialized applications • Earthen architecture • Brick and other ceramic products • Cement and related products • Appendix A: Mineralogical and chemical data • Appendix B: Properties data • Appendix C: Some World, European and UK clay deposits • Appendix D: Test methods for clay material • Glossary