International Brominated Solvents Ass'n v. American Conference of Governmental Industrial Hygienists, Inc.

ORDER

HUGH LAWSON, District Judge.

I. INTRODUCTION

At issue in this case is the adoption and enforcement of workplace-safety exposure levels for four chemical substances — silica, copper, n-propyl bromide (“nPB”), and diesel particulate matter (“DPM”). Plaintiffs are International Brominated Solvents Association (“IBSA”), National Mining Association (“NMA”), AeroSafe Products, Inc., (“AeroSafe”), and Anchor Glass Container Corporation (“Anchor Glass”). IBSA and NMA are trade associations whose members deal in the four substances at issue. They have consequently alleged claims on behalf of their…