Mexican Pork Roast without beef

2 each onions chopped 2 each carrots peeled, sliced 4 1/2 pounds pork loin or shoulder roast 2 teaspoons salt 1/2 teaspoon oregano leaf * 1/2 teaspoon cumin[...]

2 onions , chopped 2 carrots , peeled and sliced 3 -4 lbs pork roast 2 teaspoons salt 1/2 teaspoon oregano 1/2 teaspoon ground cumin 1/2 teaspoon ground[...]