Health Bill

What consideration has been given to making an exemption for what I term ““inherently dangerous workplaces””? For example, Acordis Acetate Products has a large chemical site on the edge of my constituency, where there has been no smoking for 40 years because of the inherent danger. It has always provided smoking rooms, so there has been no mix between smokers and non-smokers. If an exemption is not made, employees, who cannot leave the huge site for a quick smoke, may, against all instructions and contracts of employment, smoke on site, and if they were to smoke in the wrong place, the repercussions for public safety would be serious. Has any consideration been given to granting exemptions for such sites?