M in e Sa f et y V a l e s C o p p e r C lif f M ine is l o c a t e d w i thin the C o p p e r C lif f Of f s et in S u d b ur y a nd e xt e nds a b o u t 8k m s o u th f r o m the S u d b ur y I g ne o us C o m p l e x in t o the f o o t wa l l r o c ks Of a l l the ma jo r g e o l og i c a l s tr u c t ur es p r es e n t a t C o p p e r C lif f M ine tw o s tr u c t ur es a r e k no w n t o b e s e is mi c a l ly ac tiv e The 900 o r e b o dy O B cr os s fa u l t w hi c h s tri k es e as tw es t a nd di ps a t a b o u t 55 t o wa r ds no r th a nd The Q u a r tz Di a b as e D y k e tr a p l o c a t e d b etw e e n 100 a nd 900 O Bs s tri k in g e as tw es t a nd di p p in g s t e ep ly t o wa r ds no r th Rockburst history A r e v i e w o f the r o c k b urs ts e is mi c e v e n t his t o r y o v e r the p as t 13 y e a rs a t C o p p e r C lif f M ine r e v e a l e d tha t the r e w e r e a p p r o xima t e ly 40 r o c k b urs ts ig nif i c a n t s e is mi c e v e n t inci d e n ts in t o ta l tha t o cc urr e d in f o ur dif f e r e n t o r e b o di es Of a l l thes e inci d e n ts 35 o f the m r o ug h ly 87 o cc urr e d w i thin the 100900 O Bs a nd the r e ma inin g f iv e inci d e n ts a lmos t 13 t o o k p l ace in the 120 a nd 880 O Bs Of a l l the r o c k b urs ts the 38 M n e v e n t tha t o cc urr e d o n S ep t e m b e r 11 2008 in the 100900 O Bs f o l l o w in g a R ock b u r st Dynamic support system helps reduce threat to stopes in deep mine Special Report 2 6 C a n adi a n M inin g J o ur n a l A p r i l 2014 w w w c a n adi a nminin gj o ur n a l co m