Search results
Results From The WOW.Com Content Network
During the cleaning process bleach can be added in a 4% hydrogen peroxide solution. For stubborn stains such as mold, mildew, black sulfide stains, and organic stains, the fabric is soaked in a solution of 1 liter of de-ionized water, 60 ml 30% hydrogen peroxide and a 2.5 g sodium silicate dissolved in 100 ml hot de-ionized water.
The history of copper metallurgy is thought to have followed the following sequence: 1) cold working of native copper, 2) annealing, 3) smelting, and 4) the lost wax method. In southeastern Anatolia, all four of these metallurgical techniques appears more or less simultaneously at the beginning of the Neolithic c. 7500 BC. [4]
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]
In recent years ethical concerns have been at the forefront of developments in conservation. Most significantly has been the idea of preventive conservation . This concept is based in part on the pioneering work by Garry Thomson CBE , and his book Museum Environment , first published in 1978. [ 16 ]
Therefore, archaeologists limit the amount of excavation that they do at each site and keep meticulous records of what is found. The archaeological record is the physical record of human prehistory and history, of why ancient civilizations prospered or failed and why those cultures changed and grew. It is the story of the human world. [4]
[28] [29] A team of researchers found artifacts near historic Beaufort Inlet that confirmed the ship's origin. "Several diagnostic artifacts were recovered from the site, designated North Carolina shipwreck site 31CR314, including a bronze bell dated 1705, a sounding weight, an English blunderbuss barrel, a lead cannon apron and two cannonballs."
We can also see that if the fill of cut 5 – the wall 2, backfill 3 and trample 12 — are not removed entirely during excavation because of "undercutting", non-residual artifacts from these later "higher" contexts 2, 3 and 12 could contaminate the excavation of earlier contexts such as 9 and 10 and give false dating information.
Horse grave in a Roman moat in the heart of London, England. Rescue archaeology, sometimes called commercial archaeology, preventive archaeology, salvage archaeology, contract archaeology, developer-funded archaeology, [1] or compliance archaeology, is state-sanctioned, archaeological survey and excavation carried out as part of the planning process in advance of construction or other land ...