$3\mathrm{.}1$ Roadway development can pose serious challenges depending on the design

and limitations of a Continuous Miner $($CM$).$ How can the CM design affect the

quality of the development resulting in poor productivity. $(5)$

$3\mathrm{.}2$ A Continues Minor is very expensive equipment to be used in development. In

order to select the best design for efficiency, suggest the criteria for the

selection of the ideal CM for high productivity and efficiency. $(5)$