Hewett, P., Logan, P., Mulhausen, J., Ramachandran, G., & Banerjee, S. (2006). Rating Exposure Control Using Bayesian Decision Analysis. Journal of Occupational and Environmental Hygiene, 3(10), 568–581. https://doi.org/10.1080/15459620600914641
An amaing read if you can get through the code and make it work yourself. The R code is very VERY clever which as a result makes it less than intuitive whats being done.