Introduction: Filling the gap Section 1: Reflection on the field: specificities of the professions 1.1 Ethics and constraints 1.1.1 Political context 1.1.2 Big stuff 1.1.3 Military service collections 1.

1.4 Original surface 1.1.5 Metallurgy and hydrogen reduction 1.2 From industry to restorers to research scientist and back to applied field 1.3 Conservation education: interdisciplinarity 1.4 Accepting treatment lifetimes and the need for retreatment 1.4.

1 CS 1 Submarine 1.4.2 CS3 SS Great Britain 1.4.3 CS4 Desiccated storage of small finds 1.4.4 CS4 1.4.

5 CS5 Rail locomotives/ military tanks Section 2: Methodology of corrosion assessment 2.1 Electrochemistry and impedance spectroscopy 2.2 Cathodic Protection 2.3 Combined use of portable instruments to assess environment 2.4 Atmospheric: drones for atmospheric measurements 2.5 Micorr and the corrosion database 2.6 Assessment decay from lab to site: example of akaganeite Section 3: Material issues 3.1 Ferrous artefacts and corrosion mechanisms in atmospheric conditions 3.

2 Ferrous artefacts in submarine environment 3.3 Weathering steel 3.4 Copper based outdoor 3.5 B-impact project and advances in organic coating 3.6 Lead and silver 3.7 Aluminum 3.8 Metals in association with organic and inorganic materials: composites 3.9 Brass as gold imitation Section 4: New Treatments 4.

1 Subcritical treatment iron 4.2 Subcritical treatment copper 4.3 Bacterial treatment for protection and cleaning of corroded artefacts 4.4 Late research on the use of scanning laser systems for cleaning Cultural Heritage Cu-based artifacts.