NATURE OF THE CASE/CAUSE OF ACTION: VIOL'S OF SIP AT BLAST FURNACE CASTHOUSES AND BOF SHOP. OXYGEN FURNACE. PROPOSED REMEDY: SUIT REQUESTS INJUNCTIVE RELIEF & PLTY'S. RSC PROB WOULD END UP PUTTING ON SOME SORT OF EMISSION SUPPRESSION TECH AT THE BF'S AND SECONDAY CONTROLS ON THE BOF.