11. Discovery's return was delayed a day by worries that ground fog would obscure the shuttle's runway. 12. The odor is opaque, insidious, like ground fog . 13. The thick ground fog that prevented Columbia from landing in Florida on Friday was expected again. 14. "headlights swathing through the ground fog " ). 15. The area is very humid and the visibility can be reduced dramatically in the area due to ground fog . 16. In the morning, under cover of a heavy ground fog , the North Koreans struck Check's battalion in a counterattack. 17. Discovery astronauts remained aloft Monday, their landing attempt waved off by ground fog at their landing site in Florida. 18. A ground fog largely hid the vehicles from enemy artillery and the spaced armour defeated German machine-gun " Kerngeschoss "-rounds. 19. Antonio Carlos Jobim International Airport held up flights for nearly five hours because of thick ground fog , airport officials said. 20. There was a 100-foot layer of ground fog , plus cloud layers at 600 feet and 5, 500 feet, he said.
