Sediment removed from the excavation areas are placed in bags and labeled where and how deeply they were found. The bags are emptied on mesh screens nearby and sprayed with water.
		The dirt washes through and leaves behind tiny artifacts that were missed during the excavation. These objects are dried and put in bags along with the information about where they were found.
These objects are eventually combined with the larger artifacts collected from the same site to provide additional information to archaeologists as they examine and analyze their findings.