Regulations Made Under Part II of the Canada Labour Code Respecting Occupational Safety and Health of Employees Employed on or in Connection with Exploration or Drilling for, or the Production, Conservation, Processing or Transportation of, Oil or Gas in Canada Lands, as Defined in the Canada Oil and Gas Act

11.25 (1) Compressed air shall be used in such a manner that the air is not directed forcibly against any person.

(2) Where compressed air is used, its use shall not result in a concentration of a hazardous substance in the atmosphere in excess of the value for the hazardous substance prescribed in subsection 11.23(1).