In recent years, trade in concentrates has diminished and the market has relied more and more upon the APT quotation as a price guide since APT is the product traded in the largest quantity. Industry prices are mainly based on the quotations published twice a week by London’s "Metal Bulletin", although other trade journals also publish quotations or indicative prices. Click to view historical pricing sourced from Metal-Pages and Ryan's Notes as alternative references.
This graph is based on the quotations published by "Metal Bulletin" to which acknowledgement is due.
Notes for information: