Beautifully printed certificate from the Bunker Hill and Sullivan Mining and Concentrating Company issued no later than 1945. This historic document was printed by the Union Lithographers Company, Inc. and has an ornate border around it. This item is hand signed by the Company's Vice President and Secretary and is at least 59 years old. The Bunker Hill and Sullivan Mining Company owned extensive mining properties and operated a large mine and concentrating mill in Kellogg, Idaho. The company employed many men in its operations.