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Ötzi the Iceman, a male dated from 3300 to 3200 BC, was found with an axe with a copper head 99.7% pure; high levels of arsenic in his hair suggest his involvement in copper smelting. [7] Experience with copper has assisted the development of other metals; in particular, copper smelting led to the discovery of iron smelting. [7]
Excavation or removal of any such items also must be done under procedures required by ARPA. Encourages the in situ preservation of archaeological sites, or at least the portions of them that contain burials or other kinds of cultural items. Affects previously acquired artifacts. Continues to be amended; National Register of Historic Places [26]
A museum should carefully monitor the condition of collections to determine when an artifact requires conservation work and the services of a qualified conservator. Work of preventive conservation in a rock wall with prehistoric paintings at the Serra da Capivara National Park. The work consists of filling the cracks to prevent the ...
The reasons to restore a building most frequently fall into five main categories. [23] Value - Buildings hold intrinsic value not only in the history of the building, how it was used, but also how it was built. Historic buildings, notably pre-WWII, are built with higher quality materials and built under different standards than modern buildings.
Artifacts are extremely delicate, and any slight motion or improper physical contact can cause irreputable damage. When the artifact is brought to the surface through the use of floatation devices, the placement and stabilization of the artifact is of the utmost importance.
Maas [7] Mineral Spirits; Solvents; Ultrasonic; Painted objects. Painted objects can be cleaned with polar solvents (acetone, ethanol) and non polar solvents (hexanes and toluene) or solvent mixtures (xylene [8]). When working with solvents a conservator will use best practices in health and safety. The use of personal protection equipment is ...
Within museum collections, there are a variety of artworks and artifacts that are composed of organic plastic materials, either synthetic or semi-synthetic; these were created for a range of uses from artistic, to technical, to domestic use. Plastics have become an integral component of life, and many plastic artifacts have become cultural ...
Derveni krater, bronze, 350 BC, height: 90.5 cm (35 1 ⁄ 2 in.), Inv. B1, Archaeological Museum of Thessaloniki, after cleaning and conservation. Conservation and restoration of metals is the activity devoted to the protection and preservation of historical (religious, artistic, technical and ethnographic) and archaeological objects made partly or entirely of metal.