If your can opener is busted, you could always prepare your own. Here is my grandmother's recipe:
Wash and pick over the beans, cover with 1 quart water and soak overnight.

Cook slowly until skins burst or until just tender, drain. Place half the beans in an earthenware bean pot or casserole. Bury part of the pork in the beans and add half of the combined seasonings. Lay the remaining beans and seasonings. Lay the remaining salt pork over the top. Add boiling water to cover.

Cover the baking dish and bake from 6-8 hours in slow oven (250-300 degrees F). If necessary, replenish water from time to time to keep beans from becoming too dry.