QUESTION $1[50]$

$1\mathrm{.}1$ Briefly explain the two $(2)$ elements of the risk and opportunity management model and how would they have been applied to avert the Impala Platinum mine accident. $(5)$

$1\mathrm{.}2$ Using permit to work procedures results from the recognition that a high$-$risk task has to be carried out. Discuss five $(5)$ typical high$-$risk tasks for which permit to work procedures should have been followed at Impala Platinum Mine. $(25)$

$1\mathrm{.}3$ Critically examine four $(4)$ certain practical difficulties that may be encountered with interviewees during both on$-$site and off$-$site interviews.