How did the rate of lost-workday injuries change for underground mining operations during 1993–2002?
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].
