Calico Sandwiches

6 English muffins
3 tablespoons margarine
1 (6 1/2 ounce) can tuna, drained
6 stuffed olives, chopped
2 hardboiled eggs, chopped
1/4 cup mayonnaise
1 celery stalk, chopped fine
1/8 cup pecan pieces

Slice English muffins lengthwise; toast, then butter. Mix all ingredients and put between the muffins.