21.   Hours later, parts of the industrial facilities were still ablaze and a huge, thick cloud of smoke billowed overhead.

22.   Hours later, the oil depot outside Belgrade was still ablaze and a huge, thick cloud of smoke billowed overhead.

23.   Hours after the attacks, huge clouds of smoke billowed from the ruins, obscuring much of the skyline.

24.   Hours later, the oil depot was still ablaze and a thick cloud of smoke billowed overhead.

25.   In New York, hours after the attacks, huge clouds of smoke billowed from the ruins, obscuring much of the skyline.

26.   It lays centimetres thick underfoot, and huge clouds of it billow up with each passing vehicle.

27.   Shrapnel screamed through the air as clouds of smoke billowed up from nearby villages, where dozens of homes caught fire from the shelling.

28.   The East and South saw mostly clear conditions, and light clouds billowed over the central United States.

29.   The official Antara news agency said thick and high clouds have been billowing from the top of Mount Batur since Tuesday.

30.   As it faded, a mushroom cloud billowed in the distance, followed by a roar as the room shook and creaked.