A regular shaped cut and fill stope is shown. Pillars of size \(4\ \text{m} \times 4\ \text{m}\) are left at an interval of \(13\ \text{m}\) along the length of the stope. If the density of the mined ore is \(2.5\ \text{tonne/m}^3\), and slices are extracted to the full stope width, the total tonnage of ore recovered from the 1st slice of the stope is
\(\times 10^3\). (rounded off to one decimal place)
