Luanne's Sloppy Joes

Ingredients:

5 lb Hamburger

3/4 c. chopped onion

3/4 c. chopped celery

1/3 c. chopped green pepper

1 tbsp Worcestershire Sauce

2/3 c. Brown Sugar

1/4 Cup Mustard

1 tsp Chili Powder

4 c. Ketchup

Salt and Pepper to taste.