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For Fred C. Rydholm, author of the book “Michigan Copper, The Untold Story” CHAPTER 11 COPPER AND TIN FROM AMERICA 11.1 INTRODUCTION 11.2 COPPER AND TIN FROM THE WEST 11.3 COPPER INGOTS FROM UPPER MICHIGAN 11.4 TIN FROM BOLIVIA 11.5 TOTAL AMOUNTS OF IMPORTED METALS 11.6 PEOPLE AND SHIPS 11.7 DISCUSSION 11.8 GOLD AND SILVER TRADE Dr. R.M. de Jonge ©, drsrmdejonge@hotmail.com Read less