Soak beans in water , covered overnight. In a large
Dutch oven, cook beef until browned, stirring to keep
crumbly, Drain off drippings, if needed.
Add tomato paste, onions and drained beans.
Mix chili powder, cumin and season to taste with
salt.Stir into mixture.
Bring to boil, reduce heat, cover and simmer until
beans are tender, about 5 hours.