Q$5(30$ Points$),$ Section shown belaw belorgs to an Open pit Copper mine.

Required amaunt of are: $4\mathrm{.}48**{10}^5\frac{m^3}{y}$ear

Sub$-$drilling for ore: $2m$

lopding density; $120k\frac{g}{m},$

Powder Foctor: $0\mathrm{.}4k\frac{g}{tan},$

Driling Rote $($Ore$)$: $21\frac{m}{h}$

don: $2$ tan$/$m

Net working time ha year: $280$ days$/$hear

Net working time for drilling moch: $2200h\frac{r}{y}$ear,$50mi\frac{n}{h}r$

Net working time for truck and shovel: $12h\frac{r}{?}$ day

Dipper cycle time: $30$ sec$.$

For Truck:

Empty tranel time $(t_1)$:$244$ sec

Spot time at the shovel $(t_3)$: $60$ sec

Trawel loaded time $[$tu$)380sec$

Dump time $[$ts$]$: $90sec$

According to the data given abowe;

a$.$ Find; Bank weight, Charge amount, Weight of rock broken per drill hole, Number of holes needed, Hole spacing, Holes per year, Total drilling $[$m$]$ per year and Number of drilling machines needed?

b$.$ Calculate load time for a truck, cycle time for a truck, number of cycle in a day, truck capacity for one day and number of trucks needed $($If you have $80$ tons truck and truck filled with $4$ dipper buckets$).$