Spilling Thought: To clear all the roads, walkways and memorial plazas on the #NationalMall in #WashingtonDC, grounds and maintenance staff will have to remove 8.25 million cubic feet of #snow. That amount of snow would fill the interior of the #WashingtonMonument more than 18 times and weigh more than 62,000 tons -- 1.6 times heavier than the entire Lincoln Memorial. Here’s a cool shot of the Washington Monument during the early hours of the #blizzardof2016. Photo courtesy of Joseph Gruber. by usinterior