42 Primer o sus t ainability re P or t 2013 T ABLE 1 4 minin G W a S te p r oc es s W ast e 20 11 20 12 20 13 W ast e r ock 000s t onnes Backfill W ast e r ock st or ag e 1 0 38 76 24 95 0 43 57 831 1 32 68 T ailings 000s t onnes 663 0 7 21 3 7 66 9 T ABLE 1 5 ha Z a R dou S and non ha Z a R dou S W a S te W ast e t ype 20 12 20 13 Nonhaz ar dous w ast e 2 68 t onnes 250 t onnes Haz ar dous w ast es 165 t onnes 198 t onnes t ailin GS T ailings manag ement at San Dimas is challeng ed b y the district s rugg ed t err ain and st eep can y ons San Dimas oper at es a dry stack tailing deposition f acilit y pr oducing a flt er ed cak e that is deposit ed and c ompact ed inside the tailing st or ag e ar ea i n 20 13 the c ompan y pur chased a thir d tailing pump and made impr o v ements t o the c ontainment s y st em f or the tailing pipeline i n January 20 12 a br ok en pipeline bet w een the plant and the C upias tailings st or ag e f acilit y T SF caused a spill of tailings c ontaining 5 ppm cy anide int o the P iaxtla Riv er aff ecting an ar ea of 25 kilometr es T he f ault w as c orr ect ed and both PR OFEP A and CNA w er e notifed T he municipalit y of San Dimas c onsider ed the incident t o be localiz ed and c ontr olled stating that the damag e w as limit ed t o the death of small c onc entr ations of fsh All of PR OFEP A s r ec ommendations w er e implement ed including a ne w c ontainment structur e f or the tailings pipe i n Sept ember 20 12 CNA fned P rimer o 9 3500 pesos which w e pr omptly paid PR OFEP A lat er notifed