BH=input("Bench Height=");
N=input("Number of holes in a blast=");
K=input("Density of rock=");
Exp=input("Explosive density=");
B=25*(D/1000);
printf("Burden=%.2f ",B);
S=1.15*D
printf("\nSpacing=%.2f",S);
J=3*D
printf("\nSubdrill=%.2f",J);
C=20*D
printf("\ncharge length=%.2f",C);
SM=20*D
printf("\nStemming=%.2f",SM);
BR=BH/(B*1000)
printf("\nBurden stiffness ratio=%.2f",BR);
SS=D/10
printf("\nStemming material size=%.2f",SS);
L=BH+J
printf("\nHole length=%.2f",L);
V=B*S*BH*N
printf("\nBlasted tonnes=%.2f",V);
T=V*K
printf("\nBlasted tonnes=%.2f",T);
Vb=%pi*((D*D)/4000)*L
printf("\nVolume of blasthole=%.2f",Vb);
KG=Vb*Exp
printf("\nMass of explosive per hole=%.2f",KG);
PF=(KG*N)/T
printf("\nPF=%.2f",PF);
