Great Panther Mining Ltd, formerly Great Panther Silver Limited, is an intermediate precious metals mining and exploration company. It operates three mines, including the Tucano Gold Mine and two primary silver mines in Mexico: the Guanajuato Mine Complex and the Topia Mine. The Tucano Gold Mine is located in Amapa State in northern Brazil. The mine is approximately 200 kilometers (km) from Macapa. The Guanajuato Mine Complex produces silver and gold concentrate and is located in central Mexico, approximately 380 km north-west of Mexico City, and approximately 30 km from the Guanajuato International Airport. The Topia Mine is located in the Sierra Madre Mountains in the state of Durango in northwestern Mexico. The mine produces concentrates containing silver, gold, lead and zinc. Its exploration properties include the El Horcon, Santa Rosa and Plomo projects in Mexico; the Tartaruga project in Brazil, and the Argosy project in Canada.