After OMB cleared the agency's final rule, OSHA chief Dr. David Michaels and Labor Secretary Thomas Perez have announced its publication is imminent, and it will take effect Jan. 1, 2015.
The one-hour challenge will take place at its booth 1339 in the expo, from 10 a.m. to 11 a.m. Sept. 15.
The Youngstown, Ohio steel mill is fined $94,000.
The organization is seeking nominations for five members.