Sedar.com - SEDAR (the System for Electronic Document Analysis and Retrieval) is the system used for electronically filing most securities related information with the Canadian securities regulatory authorities. Filing with SEDAR started January 1, 1997, and is now mandatory for most reporting issuers in Canada.
Kitco.com - A great resource for Precious Metals and especially Silver prices and charts.
The Silver Institute - The Silver Institute is a nonprofit international association that draws its membership from across the breadth of the silver industry.