title: Exposure assessment to dust and free silica for workers of Sangan iron ore mine in Khaf, Iran.
abstract: We aimed to conduct an exposure assessment to dust and free silica for workers of Sangan iron ore mine in Khaf, Iran. The maximum concentrations of total dust and free silica were measured in crusher machine station at 801 ± 155 and 26 ± 7 mg/m(3), respectively. Meanwhile, the minimum concentrations were measured in official and safeguarding station at 8.3 ± 2 and 0.012 ± 0.002 mg/m(3), respectively. Also, the maximum concentrations of respirable dust and free silica were measured in Tappeh Ghermez drilling no. 1 at 66 ± 13 and 1.5 ± 0.4 mg/m(3), respectively, while the minimum concentrations were measured in pneumatic hammer at 5.26 ± 3 and 0.01 ± 0.005 mg/m(3), respectively. Considerate to Iranian standard for respirable dust concentrations (0.11 mg/m(3)) and international standards (ACGIH = 0.1 and NIOSH = 0.05 mg/m(3)), it was found that dust and free silica amounts were much higher than national and international standard levels in this mine.
authors.affiliation: Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Qods Street, Tehran, Iran. al.naghizadeh@yahoo.com
authors.forename: Ali
authors.initials: A
authors.lastname: Naghizadeh
authors.forename: Amir Hossein
authors.initials: AH
authors.lastname: Mahvi
authors.forename: Hossein
authors.initials: H
authors.lastname: Jabbari
authors.forename: Elham
authors.initials: E
authors.lastname: Derakhshani
authors.forename: Hassan
authors.initials: H
authors.lastname: Amini
mesh_terms: D000328:Adult; D000395:Air Pollutants, Occupational / Q000032:analysis*; D004391:Dust / Q000032:analysis*; D004784:Environmental Monitoring; D006801:Humans; D007492:Iran; D007501:Iron; D008297:Male; D008906:Mining / Q000706:statistics & numerical data*; D016273:Occupational Exposure / Q000032:analysis* / Q000706:statistics & numerical data; D012822:Silicon Dioxide / Q000032:analysis*; D017132:Workplace / Q000706:statistics & numerical data
chemical_list: D000395:Air Pollutants, Occupational; D004391:Dust; D012822:Silicon Dioxide; D007501:Iron