In a mixing bowl combine sugar and oil; mix well. Add eggs one at a time. Beating well after each addition, stir in molasses. Combine dry ingredients; gradually add to creamed mixture and mix well. Shape into 3/4" balls. Roll in sugar. Place 2" apart on ungreased baking sheets. Bake at 350 for 10-12 min or until cookie springs back when touched lightly. Remove to wire racks to cool. Melt chips with shortening in a small saucepan over low heat. Dip the cookies halfway, shake off excess. Place on waxed paper-lined baking sheets to harden. Makes about 12 dozen!