Combine finely ground spices including paprika, seasoning salt, red pepper, black pepper, plain salt, garlic powder, dry mustard, chili powder and oregano. Mix the dry ingredients together in a shaker and adjust amounts to suit individual taste.
Apply a heavy coat of rub to each slab of ribs. Heat the charcoal in a smoker to 220 degrees F. Put the ribs in the smoker and cook for 6 hours until meat is tender.
When the ribs are cooked thoroughly, apply a coat of tomato based barbeque sauce with a soft brush and serve.