Reducing silica and dust exposures in construction during use of powered concrete-cutting hand tools: efficacy of local exhaust ventilation on hammer drills.
Shepherd S, Woskie SR, Holcroft C, Ellenbecker M. Reducing silica and dust exposures in construction during use of powered concrete-cutting hand tools: efficacy of local exhaust ventilation on hammer drills. J Occup Environ Hyg. 2009 Jan; 6(1):42-51.