1906-1907: The Hummel‐Kearns claims, to the east of the Kerr‐Addison and Reddick claims, are staked, and Lucky Bay Mining Company (Lucky Bay) constructs a mill to recover a small amount of gold. The ownership of the Hummel‐Kearns claims is incorporated as Chesterville Larder Lake Gold Mining Company Ltd. (Chesterville-Larder Lake).

1907: Chesterville-Larder Lake advances two prospects, however, no additional funds are raised to explore these claims until 1936.

1937: Exploration drilling starts back up again, and 1,000,000 tonnes of mineralized material is discovered. Chesterville‐Larder Lake also builds a powder magazine, office, dry, steel shop, hoist, compressor building, and boiler house. A shaft is deepened, and additional workings are developed.

1938-1939: A mill is built on the Chesterville Mine Property. In 1939, the first gold bar is poured.

1940: Mill capacity is increased to 700 tonnes per day.

1946: Chesterville Larder Lake changes its name to Chesterville Mines Ltd. (Chesterville Mines).

1952: Operations abruptly cease as a result of a surface cave‐in, which also takes down part of the Kerr‐Addison timber yard.

1957: The Chesterville Mine Property, plus $50,000, is transferred to Kerr‐Addison Gold Mines as a settlement for the damage done to the Kerr‐Addison Mine Property.