The blaze, resulting from equipment and tires that caught on fire was visible from Highway 280 early Sunday morning.
Firefighters extinguished a fire at a Cupertino cement plant Sunday morning. The same cement plant was also the site of a deadly workplace shooting where three were killed and seven injured last October.
The one-alarm fire was reported at about 5:45 a.m. at Lehigh Southwest Cement Plant, located at 24001 Stevens Creek Blvd, according to a fire dispatcher.
Drivers reported seeing thick black smoke from as far away as Highway 280, apparently because truck equipment and tires had caught on fire.
No one was injured in the fire, which crews put out around 7:45 a.m. Fire representatives said the cause of the blaze is still under investigation.