Add the salt, pepper, chili powder, garlic powder, onion powder, oregano and cumin in a bowl and mix well. Rub the seasoning mixture all over the beef roast.
Add some olive oil to a hot pan and sear the beef troast on all sides until browned. Then set aside.
Add more oil to a hot pan and saute the onions, celery, and carrots. After about 3-4 minutes, add the minced garlic. Stir the veggies for another minute or so then transfer to the crock pot. Spread the veggies evenly on the bottom of the crock, then lay the beef over top.
For the sauce add the butter to a hot pan, then add the flour and stir til the flour cooks out a bit. Then add the red wine, chicken broth, worcrstershire sauce, tomato paste, and brown sugar. Stir ans simmer until the sauce is slightly thickened.
Pour the sauce over the meat. put in some bay leaf, thyme and rosemary sprigs over top. Cook on low 8 hrs.