OSHA announced its silica final rule last spring and it immediately received criticism from industry groups. These groups call the standard unobtainable and very costly--and they claim that the rule isn’t really necessary to improve worker safety.The rule has spawned lawsuits and speculation that a Republican-controlled Congress could take action to overturn it. Adele Abrams, a preeminent occupational safety attorney, joins us to help sort out the facts (and dispel a few myths) about the rule,