You are tasked with evaluating ore management systems in a block caving operation.

The three major systems in block caving are: $(1)$ the Grizzly or Gravity System, $(2)$ the

Slusher System, and $(3)$ the Rubber$-$Tired System. Each system employs different

production equipment for ore handling.

$2\mathrm{.}1.$ Compare and contrast the Grizzly or Gravity System, the Slusher System, and

the Rubber$-$Tired System. Discuss the advantages and limitations of each

system for managing ore in a block caving operation. $(6$ marks$)$

$2\mathrm{.}2.$ Given a block caving operation with a large, high$-$grade ore body and varying

ore sizes, recommend the most suitable ore management system. Justify your

choice based on factors such as ore handling efficiency, system flexibility, and

overall cost$-$effectiveness. Consider the impact of ore size variations and

operational challenges on your recommendation. $(5$ marks$)$

$2\mathrm{.}3.$ Draw a large, neat, clearly labelled diagram showing LHD units loading directly

out of drawpoints that lie below the cones and transport the ore to the

orepasses. $(4$ marks$)$