"We were on the second floor so we could see the building moving and shaking.More than 300 people, including firemen, policemen and villagers, worked at a sand extraction site to rescue seven people reportedly buried alive, including a 6-year-old boy who had accompanied his grandfather to work.The quake, about 20 miles deep, shook buildings as far away as Mexico City, 600 miles to the northwest," . . . .