Description and significance. Streptococcus mutans is a Gram-positive bacterium that lives in the mouth. It can thrive in temperature ranging from 18-40 degrees Celsius. The bacterium metabolizes different kinds of carbohydrates, creating an acidic environment in the mouth as a result of this process.
Occupational Safety & Health Administration. Welcome to OSHA's Fall Prevention Campaign. FALLS ARE THE LEADING CAUSE OF DEATH IN CONSTRUCTION. In 2013, there were 291 fatal falls to a lower level out of 828 total fatalities in construction. These deaths are preventable. Falls can be prevented and lives can be saved through three simple steps:
Trenching | Transcript. In the U.S., more than 800 construction workers die every year while on the job. One of the most dangerous types of construction work is trenching, which kills, on average, 40 workers every year. Workers can suffer death or serious injury within minutes of being caught in a trench cave-in. But these deaths can be prevented.