PRODUCTION COMMENCES AT BRACEMAC-MCLEOD

May 16, 2013, Montreal, Québec: Mr. Harvey Keats, Chief Executive Officer of Donner Metals Ltd. (“Donner” or the “Company”) (TSXV-DON), is pleased to report that production at the anticipated average rate of 3,000 tonnes per day commenced on May 15 at the Bracemac-McLeod Mine located near Matagami, Québec. Donner’s partner and operator, Glencore Xstrata plc (“Glencore Xstrata”), is now processing copper and zinc ore from the new mine following the depletion of ore at their Perseverance Mine. The Bracemac-McLeod Mine is a 65% Glencore Xstrata, 35% Donner joint venture. As operator, Glencore Xstrata is responsible for the execution of all development, production, processing, milling, smelting and refining activities related to the Bracemac-McLeod Mine, as well as the exploration programs conducted on the Matagami Project.

SUPPLEMENTARY INFORMATION

Discovered in 2007 by the Donner and Glencore Xstrata team, the Bracemac-McLeod mine represents a $159 million investment. It is the 12th zinc mine in the Matagami camp. Matagami operations contribute significantly to Québec’s economic development by employing 260 people, directly injecting $27 million into the economy through wages. In addition, the operations create hundreds more indirect jobs via $13.5 million in annual goods and services procurement through 23 mostly Québec-based companies.

The Bracemac-McLeod deposit contains Proven and Probable Mineral Reserves of 3.7 million tonnes grading 9.60% zinc, 1.26% copper, 28.25 g/t silver and 0.43 g/t gold. Inferred Mineral Resources of 2.6 million tonnes grading 8.79% zinc, 1.31% copper, 38.84 g/t silver and 1.06 g/t gold are located in proximity to the Mineral Reserves. The Company is a fully vested partner with Glencore Xstrata in the extensive Matagami base metal camp located in the Abitibi region of Québec. This joint venture partnership covers claims, mining licences and other direct mineral titles comprising six joint ventures (collectively the “Matagami Project”) at either 50%/50% or 65%/35% Glencore Xstrata/Donner joint venture interests respectively. The Matagami Project covers prime volcanic stratigraphy in which high-grade zinc and copper massive sulphide deposits have been discovered and mined since 1963. Additional information is available at www.donnermetals.com.

Robin Adair (VP of Exploration) is a Qualified Person for Donner Metals Ltd and is responsible for the technical information reported in this news release.

ON BEHALF OF THE BOARD OF
DONNER METALS LTD

“Harvey Keats”
Chief Executive Officer