$1\mathrm{.}1$ List the $5($five$)$ requirements for a Gravimetric dust sampling pump? $(6)$

$1\mathrm{.}21\mathrm{.}2$ AZ Mining is a medium scale underground coal mining company. The company has

been struggling to meet its production targets for the longest time. Management decided to

conduct an audit to pinpoint the root cause of this problem and found that poor communication

was the major contributor to this. The company has approached you to help improve

communication in the workplace. Recommend some guiding principles that they can apply to

improve the identified issue.