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Evaluation of Sub-micrometer-Sized Particles Generated from a Diesel Locomotive and Jackleg Drilling in an Underground Metal Mine.

Concerns have been raised regarding small respirable particles, i.e. sub-micrometer-sized particles, associated with mining activities. This evaluation was designed to investigate the emissions from jackleg drilling and diesel engines and to characterize the nature of emitted particles using gravime...

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Published in:Annals of Work Exposures & Health Vol. 64; no. 8; pp. 876 - 890
Main Authors: Tsai, Candace Su-Jung, Shin, Nara, Brune, Jürgen
Format: pictorial research tables/charts Journal Article
Published: Oxford University Press / USA Oct2020
Online Access:View this record in EBSCOhost
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      dt: Oct2020
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      pub: Oxford University Press / USA
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        atl: Evaluation of Sub-micrometer-Sized Particles Generated from a Diesel Locomotive and Jackleg Drilling in an Underground Metal Mine.
      aug:
        au:
          Tsai, Candace Su-Jung
          Shin, Nara
          Brune, Jürgen
        affil: Department of Environmental & Radiological Health Sciences, College of Veterinary Medicine & Biomedical Sciences, Colorado State University , Fort Collins, CO, USA
      sug:
        subj:
          Petroleum
          Mining
          Extraction and Processing Industry
          Microparticles Evaluation
          Occupational Exposure
          Particulate Matter Evaluation
          Aerosols
      ab: Concerns have been raised regarding small respirable particles, i.e. sub-micrometer-sized particles, associated with mining activities. This evaluation was designed to investigate the emissions from jackleg drilling and diesel engines and to characterize the nature of emitted particles using gravimetric analysis and number metrics. The mass concentration to which workers are potentially exposed was determined from a 4-h sampling in the vicinity of drilling activities in an underground metal mine; this concentration was found to be lower than 0.6 mg m−3 of total respirable dust. This mass concentration is low; however, the number concentrations of emitted particles from drilling exceeded 1 × 106 particles cm−3 in areas 7–9 m downwind from the drilling operation. Sub-micrometer-sized particles were also observed in aerosol samples collected using a specialized sampler, and various elements associated with drilling were found among these emitted particles. Finally, the particles in the diesel exhaust were collected, and the exhaust was found to contain nanometer-sized particles.
      pubtype: Academic Journal
      doctype:
        pictorial
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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