$(20$ pts$)$ Design a surface quarry blast under given conditions using O$-$PITBLAST software and

submit your report $($Ready$-$to$-$print report$).$ Use the following data:

Rock type: Limestone

Hole diameter: $4$ inches

Sub$-$drilling: $2ft$

Face Height: $23ft$

Spacing: $10ft$

Burden: $10ft$

Total weight of explosive: $2,040lb$

Number of decks: $1$

Pounds per delay: $85lb$

Stemming length: $6ft$

Powder Factor: $0\mathrm{.}92l\frac{b}{y}d3$

Number of holes: $24$

Explosives: Cast boosters & ANFO

Detonators: non$-$electric Ez$-$Det caps, with $25ms$ surface delay $($between holes$),17$ ms delay between

rows, and $350ms$ down$-$hole delav.