Diamond Foods Inc's buy of Pringles from Procter & Gamble Co for $1.5 billion in stock, could more than triple the size of its snack foods business. [ID:nL3E7F51VH] Following are some key dates in the history of Diamond Foods: 1912: A group of walnut growers in California found Diamond as an agricultural cooperative 1926: The company that started with walnuts begins branding its premium products with the red Diamond brand
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