Question $1($Shart elnkling$)$

A $9$m diameter shaft is being sunk through a rock with a $($true$)$ density of $2\mathrm{.}7m^3$ with a swell factor of $15\%$ at a rate of of $6$m per day. The shaft in eqiipped with kibbles that have $2$ m diameter and are $2m$ high

$1\mathrm{.}1$ What tonnage of rock must be hoisted to surface each day?

$1\mathrm{.}2$ How many kibble loads must be hoisted to surface each day to remove broken rocknirocking a kibble has a filfilling factor of $80\%?$

$(4)$

$1\mathrm{.}3$ You are told that thete are two shifts per day working at the mine with a $3$m advance per shift required to achieve $6$m daily advance. The mine operates at $12$ two $12-$hour cyclescycles and the allocated cleaning time per shift is $6$ hours