Alden Strealy is a certified industrial hygienist (CIH) working in construction health & safety. Click here to be notified when there are new posts by “subscribing” for email notifications. I welcome constructive (no pun intended) feedback and comments.


This site was created to:

  1. help employees protect themselves from health & safety issues,
  2. answer frequently asked questions,
  3. provide transparency into the field of industrial hygiene and,
  4. dispel myths.

I’ve created a short video of the background for this blog here:

IH Construction video


I’ve cleverly disguised my email from spam:






What is a certified industrial hygienist (CIH)?