Comparison of fuse plug specificationsPercent ratio %
  Emergency Emergency concrete Emergency ECF/SP ECF2/SP
  concrete fuse fuse plug (ECF) steel plug (SP)    
  plug (1st stage) (1st & 2nd stage)      
Total cost (US$) 53,000 (in 2000) 70,490 (in 2001) 251,000 (in 1997) 21 28
Total time (days) 15 27 58 26 47
Concrete volume (m3) 665 1036 1244 53 83
Formwork area (m2) 280 454 435 64 104