Myers, W R <br/><br/>
Field performance measurements of half-facepiece respirators: steel mill operations.  [electronic resource] 

 -  American Industrial Hygiene Association journal  Nov 1998 
 - 789-95 p.  digital 
<br/><br/> Publication Type: Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial 
<br/><br/><label>ISSN: </label>0002-8894 
<br/><br/><label>Standard No.: </label>10.1080/15428119891010974  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air Pollutants, Occupational--analysis<br/>Calcium--analysis<br/>Dust--analysis<br/>Environmental Monitoring--methods<br/>Humans<br/>Iron--analysis<br/>Job Description<br/>Maximum Allowable Concentration<br/>Metallurgy<br/>Particle Size<br/>Respiratory Protective Devices--standards<br/>Single-Blind Method<br/>Steel