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Int. J. Environ. Res. Public Health 2012, 9(2), 343-361; doi:10.3390/ijerph9020343
Article

Checklist Model to Improve Work Practices in Small-Scale Demolition Operations with Silica Dust Exposures

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1 Department of Environmental Health, College of Medicine, University of Cincinnati, 3223 Eden Ave., Kettering Laboratory, Cincinnati, OH 45267, USA 2 Center for Industrial Studies, Safety and Environment, Eduardo Mondlane University, P.O. Box 257, Maputo, Mozambique 3 Education and Information Division, National Institute for Occupational Safety and Health (NIOSH), CDC, 4676 Columbia Parkway, Cincinnati, OH 45226, USA
* Author to whom correspondence should be addressed.
Received: 28 September 2011 / Revised: 17 January 2012 / Accepted: 18 January 2012 / Published: 24 January 2012
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Abstract

A systematic approach was developed to review, revise and adapt existing exposure control guidance used in developed countries for use in developing countries. One-page employee and multiple-page supervisor guidance sheets were adapted from existing documents using a logic framework and workers were trained to use the information to improve work practices. Interactive, hands-on training was delivered to 26 workers at five small-scale demolition projects in Maputo City, Mozambique, and evaluated. A pre-and-post walkthrough survey used by trained observers documented work practice changes. Worker feedback indicated that the training was effective and useful. Workers acquired knowledge (84% increase, p < 0.01) and applied the work practice guidance. The difference of proportions between use of work practice components before and after the intervention was statistically significant (p < 0.05). Changes in work practices following training included preplanning, use of wet methods and natural ventilation and end-of-task review. Respirable dust measurements indicated a reduction in exposure following training. Consistency in observer ratings and observations support the reliability and validity of the instruments. This approach demonstrated the short-term benefit of training in changing work practices; follow-up is required to determine the long-term impact on changes in work practices, and to evaluate the need for refresher training.
Keywords: work practices; construction sector; dust exposure controls; Mozambique work practices; construction sector; dust exposure controls; Mozambique
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Muianga, C.; Rice, C.; Lentz, T.; Lockey, J.; Niemeier, R.; Succop, P. Checklist Model to Improve Work Practices in Small-Scale Demolition Operations with Silica Dust Exposures. Int. J. Environ. Res. Public Health 2012, 9, 343-361.

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