Scraping may be performed using such tools as chisels, planes, and cabinet scrapers. Cleaning accessories include such items as griddle scrapers and squeegees. Bowl and plate scrapers are sometimes called spatulas. Their tools, including scrapers, chisels and arrowheads, were discovered in 1973 through archaeological excavations. Obsidian cutting knives, sickles, scrapers, drills, razors, and arrow points have also been found. Scrapers, engraving tools and adze blades were also included in their toolkits. The tools used were seven scrapers, one chisel and a piece of carborundum stone. Stone arrowheads, knives and scrapers from the era are commonly found. Materials from the chamber included arrowheads, knives and scrapers. Large amounts of knives, scrapers, arrow heads and other tools have been found. They are defined by surface finds of tanged points, burins, scrapers, and adzes. Scrapers and knives are found in abundance. Analysis of parrotfish feeding biology describes three functional groups&colon; excavators, scrapers and browsers. Human tools, such as knives, spears and scrapers were discovered in the vicinity. Traces of seasonal camps, characterized by arrowheads, scrapers, and other similar tools have been found.