Lowering Respirable Dust at an Iron Ore Concentrator
2012-8-30 · Lowering respirable dust at an iron ore concentrator plant through improved ventilation practices A.B. Cecala, J.A. Zimmer, J.F. Colinet, & R.J. Timko National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, Pittsburgh, PA, USA INTRODUCTION In August 2000, the United Steelworkers of America