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| Keywords: NIOSH-2011-11+.jpg ru Рисунок 11 из обзо а п офзаболеваний шахтё ов http //www cdc gov/niosh/docs/2011-172/pdfs/2011-172 pdf Coal Mine Dust Exposures and Associated Health Outcomes П оизводительность т уда шахтё ов под землёй тонн в час за пе иод 1978-2008г Сначала осла до 5 тонн в час 2000г потом снизилась до 3 т/час Источник http //www msha gov/ACCINJ/BOTHCL HTM en Figure 11 Tons produced per hour worked at underground coal mines 1978 2008 Source http //www msha gov/ACCINJ/BOTHCL HTM 2015-04-21 http //www cdc gov/niosh/docs/2011-172/pdfs/2011-172 pdf Coal Mine Dust Exposures and Associated Health Outcomes A Review of Information Published Since 1995 Michael Attfield et al NIOSH USA other versions PD-USGov National Institute for Occupational Safety and Health Mining Workplace safety Workplace safety of Russia Occupational diseases Miners Uploaded with UploadWizard | ||||
