DOSH Expands Chevron Probe By: Kevin Thompson Vol: 39 | No: 37 | Published on: September 28, 2012 Cal/OSHA has been a continual presence at the site of August's huge oil refinery conflagration in Richmond. Now it's expanding its probe. How far? Read on. Read More...This content is for premium subscribers. To read please login or subscribe below.Subscribe Log In Username or Email Address Password Remember Me