$[$Crowl $5-8]$ A tank of chlorine contains $1000kg$ of chlorine at $50$ barg. What is the maximum hole diameter $($in $mm)$ in this tank that will result in a downwind concentration equal to ERPG$-1$ at a downwind distance of $300m?$ Assume $1$atm,$25C,C{l}_{2}MW=70\mathrm{.}9\frac{g}{m}ol,$ and that all the liquid chlorine vaporizes.