21.   Though not trained to use the anti-aircraft machine gun, he fired through the heavy smoke as bombs and torpedoes continued to explode.

22.   We walked in heavy smoke to the rear, up and down steps built in the fuselage, then up the aisle, which inclined upward.

23.   With heavy smoke rising from the pit, the veterans tossed the flags one by one into the bonfire.

24.   Passengers on an Egyptian train took fright Monday when they saw heavy smoke and a shower of sparks coming off the wheels, police said.

25.   Police asked drivers on the highway to keep their car lights on because the heavy smoke made vision difficult.

26.   A health alert was issued for the Hamilton area advising people to stay indoors because of the heavy smoke.

27.   A nearby rural highway was closed for several hours because heavy smoke from the fire hampered visibility.

28.   After heavy smoke turned them back, they uncoupled the locomotives and rode out of the tunnel.

29.   At the height of the blaze, flames leaped from windows on the top three or four floors, and the whole building was engulfed in heavy smoke.

30.   At the height of the blaze, flames leapt from windows on the top three or four floors, and the whole building was engulfed in heavy smoke.