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| 1 |  | Figure 4-9 Rate of lost-workday injuries for surface mining operations by type of employer and commodity, 1993-2002. From 1993 to 2002, the rate of lost-workday injuries declined overall for operator workers in all commodities and for metal/nonmetal-independent contractor workers. Throughout this 10-year period, the highest rates of lost-workday injuries were consistently observed for stone operator workers. (Sources: MSHA [2003]; NIOSH [2003a].)
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| 2 |  | Figure 4-10 Rate of lost-workday injuries for underground mining operations by type of employer and commodity, 1993-2002. During 1993-2002, underground coal operator workers and underground coal-independent contractor workers consistently had the highest rates of lost-workday injuries. Although marked by slight increases and decreases during this 10-year period, lost-workday injury rates for underground nonmetal operator workers and underground stone operator workers have remained relatively constant. (Sources: MSHA [2003]; NIOSH [2003a].)
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| 3 |  | Figure 4-11 Rate of lost-workday injuries by type of incident and work location, 1998-2002. During 1998-2002, miners at underground locations generally had higher nonfatal injury rates than those working on the surface. Injuries to miners at both surface and underground locations were most frequently associated with handling materials and slip or fall of person. Miners working underground also had relatively high rates of injury from fall of ground incidents (caving rock), or in incidents involving powered haulage or machinery. (Sources: MSHA [2003]; NIOSH [2003a].)
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| 4 |  | Figure 4-12 Distribution of lost-workday injuries by age of worker and type of employer and commodity, 2002. The proportion of injured workers above age 44 at the time of injury was highest among coal and metal operator workers and lowest among coal-independent contractor workers. Conversely, the proportion of injured workers under age 25 was highest among coal-independent contractor workers, sand and gravel operator workers, and stone operator workers. (Sources: MSHA [2003]; NIOSH [2003a].)
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| 5 |  | Figure 4-13 Number of lost-workday injuries by sex of worker and type of employer and commodity, 2002. In 2002, only 2% (190) of all nonfatally injured mine workers were female, whereas 14.6% of the entire mining workforce was female (Chapter 1, Table 1-4). The highest proportion of female workers with lost-workday injuries was reported by metal operators (6%), and the lowest proportion was reported by metal/nonmetal-independent contractors (1%) and coal operators (2%). (Note: Percentages shown within the bars represent the proportion of male workers with lost-workday injuries.) (Sources: MSHA [2003]; NIOSH [2003a].)
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| 6 |  | Figure 4-14 Median number of lost workdays due to nonfatal lost-time mining injuries by work location and selected types of incidents, 1998-2002. During 1998-2002, the median number of lost workdays due to nonfatal lost-time mining injuries was 21 for miners injured underground and 14 for miners injured at surface locations. At surface locations, falls of ground (e.g., rock dislodging from a highwall) accounted for the highest median number of lost workdays. At underground locations, powered haulage and slip or fall of person accounted for the highest median number of lost workdays. (Sources: MSHA [2003]; NIOSH [2003a].)
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| 7 |  | Figure 4-15 Distribution of lost-workday injuries among miners by type of employer and commodity and years of total mining experience, 2002. In 2002, the proportion of workers with lost-workday injuries was highest among coal operator workers with more than 5 years of experience, and lowest among coal operator workers with less than 1 year of experience. Of the mine workers with less than 1 year of mining experience, independent contractor workers had the highest proportions of lost-workday injuries. These differences must be interpreted with caution, since years of mining experience were not reported for 10% of cases. (Sources: MSHA [2003]; NIOSH [2003a].)
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