Ham And Mixed Bean Soup

Ingredients

• 1 (1 lb) bag dried beans, mixed
• 1 tablespoon olive oil
• 1 large onion, chopped
• 3 bay leaves
• 4 stalks celery, chopped
• 4 large carrots, chopped
• 1 lb ham, chopped
• 6 mushrooms, chopped
• salt and pepper