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national average in all six years, while the SM was better than the national average in three years, and only slightly higher in 2011 and 2013, while 28.5% higher in 2009. Altogether, this is an excellent sus- tained safety performance. The six-year accident trends for AEP related to medium-size surface mines, as compared to national averages, are given in Table 12. In all years, except 2011, the accident performance of the medium-size surface mine suppliers was far superior to the national performance. There were no fatalities in these mines in five of six years, and the NFDL IR was consistently lower than the national average every year. The SM was also significantly lower in these mines in five of six years, but in 2011 there was a single fatality nationally in this mine-size category, and it occurred in one of the supplier mines. This demonstrates the impact of a fatality on an operation and the importance of strong safety programs, as the number of fatalities continues to diminish nationally. The six-year accident trends for AEP small surface mine sup- pliers, as compared to national averages, are given in Table 13. In all years except 2012, the accident performance on the Fatal IR and SM of the small surface mine suppliers was superior to the national performance. There were no fatalities in these mines in five of six years. The NFDL IR was lower than the national average in 2008, 2011 and 2013, and it was near the national in the other three years. As was the case for the fatality in the medium-size supplier mine in 2011, the impact of a fatality on a mining opera- tion is observed in 2012. There was one very small surface mine respondent supplying coal to AEP in 2013 and none in 2012; thus, no six-year trends are presented. There was no medium-large size facility supplier in 2013 and only one in 2012; thus, no six-year trends are presented. The five- year trends for small facility suppliers to AEP are given in Table 14. For the years 2008-2012, there were no fatalities and the rates for 2011 and 2012 were significantly lower than the national rates for this mine-size category. In 2013, however, a single fatality at the sin- gle facility supplier drove the rates significantly above the national averages. This signals the tremendous impact that a fatality has on a May 2015 www.coalage.com 47 s u s t a i n a b i l i t y c o n t i n u e d