Chile's Chamber of Deputies (lower house of Congress) has reportedly approved a draft bill providing for the introduction of a new base rate royalty of 3% on copper and lithium sales, as well as other metals. Further, an additional progressive tax on copper has been approved based on copper prices. This includes a lower rate of 15% where prices are between USD 2.00 to 2.50 per pound up to a top rate of 75% if prices exceed USD 4.00 per pound. Copper prices are currently USD 4.70 per pound aft…