High-Quality Jadeite Tool (IMAGE) Louisiana State University Caption LSU anthropologist Heather McKillop discovered this high-quality jadeite tool at the site of an ancient salt works in Belize that has been submerged in water due to sea level rise. This high-quality jadeite tool shows the importance of salt and Maya salt workers among the Classic Maya economy more than 1,000 years ago. Credit Heather McKillop, LSU. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.