The United States Department of Labor’s Bureau of Labor Statics (BLS) released a report saying that more workers (41) died on the job as a result of a single episode of inhaling chemicals in 2017 than were reported in 2016 (34). The number of fatal injuries like this has ranged between 33 and 55 each year from 2011 to 2017 and there have been a total of 297 fatalities across this time.

They found that inhaling carbon monoxide led to the most fatalities during this time period (116 fatal injuries) followed by inhaling hydrogen sulfide (46 fatal injuries). Of the fatal single episode inhalations of chemicals and chemical products, 37 percent occurred in a confined space, and all fatal single inhalations of methane gas involved a confined space (9 fatal injuries). Other chemicals that led to a fatal injury after a single inhalation were toluene, solvents and degreasers, dichloromethane, and coal, natural gas and petroleum fuels and products.

In the past seven years 2014 saw the most fatalities related to chemical inhalation with 55.

Read more from the BLS.