As the government shutdown stretches for a seventh day, gold prices just crossed the $4,000 mark for the first time ever. The safe-haven commodity has been stringing record highs amid political uncertainty, so now is a good opportunity to check with mining giants Agnico Eagle Mines Ltd (NYSE:AEM) and Newmont Corporation (NYSE:NEM).AEM is down 2.3$166.51 at last glance, taking a breather from yesterday's record high of $172.15. The stock is fresh off a seventh consecutive weekly gain amid long- ...