In a medium bowl, combine flour, baking soda, ginger, cinnamon, and salt.
In a large mixing bowl, beat butter or margarine until creamy. Gradually beat in 1 cup sugar. Beat in egg and molasses. Gradually stir in flour mixture and continue mixing until a soft dough forms.
Shape dough into 1 inch balls. Place the remaining sugar in a small soup bowl and roll each ball until coated with sugar. Place balls 2 inches apart on an ungreased baking sheet.
Bake at 350°F for 10 to 12 minutes or until tops are rounded and slightly cracked.
Remove from oven and let sit 3 minutes and then remove to racks to cool.