Old Southern Chocolate Pecan Sheet Cake

INGREDIENTS

• Cake:
• 2 cups white sugar
• 2 cups all-purpose flour
• 1/2 teaspoon salt
• 1 cup water
• 1/2 cup vegetable shortening
• 1/2 cup margarine
• 3 tablespoons unsweetened cocoa powder
• 1 teaspoon baking soda
• 1/2 cup buttermilk
• 2 eggs, beaten
• 1 teaspoon vanilla extract
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• Icing:
• 1 (16 ounce) box confectioners' sugar
• 1/2 cup butter
• 6 tablespoons milk
• 1 cup chopped pecans