$During its production life Martha produced from very high-grade veins and vein breccias. The high silver grades of the historic Mineral Reserves, ranging from over 2,500 grams/tonne (g/t) in the early years of the project to over 400 g/t in the later production years, and the high silver to gold ratio of the historic Mineral Reserves which averaged over 900:1, set Martha apart from the other producing mines in the province.