(HealthDay News) — Cigarette smoking continues to decline among Americans who work, but use of smokeless tobacco has held steady since 2005, according to research published in the June 6 issue of the U.S. Centers for Disease Control and Prevention’s Morbidity and Mortality Weekly Report.

Certain types of jobs – construction and mining, especially – are hotbeds of smokeless tobacco use, according to a study conducted by the U.S. National Institute for Occupational Safety and Health. For the report, researchers analyzed data from the National Health Interview Survey. About 19% of mining workers acknowledged use of smokeless tobacco, the survey found. Adults involved in oil and gas extraction also reported heavy use of smokeless tobacco, with about 11% using the products.

Looking at tobacco use over five years, the researchers found a decline in cigarette smoking among working adults – from about 22% in 2005 to 19% in 2010. But use of smokeless tobacco products such as chewing tobacco and snuff inched up slightly – from 2.7% in 2005 to 3% in 2010. The percentage of cigarette smokers who also use smokeless tobacco was relatively unchanged during the study period — about 4%, the researchers said.

“These findings can help health professionals direct assistance to working men and women to stop using smokeless tobacco, a known cause of oral, esophageal, and pancreatic cancer,” the researchers from the CDC reported.

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