Question

For O.B. removal with shovel, the optimum size of the dumper depends on

• A. Distance of the haul only
• B. Size of the shovel only
• C. Distance of the haul and size of the shovel
• D. Tonnage to be handled

Hint:

Efficient shovel--dumper matching depends mainly on \[ \boxed{ \text{Shovel capacity + Haul distance}. } \]

Answer 1

The Correct Option is C

Step 1: Recall the shovel--dumper combination. In surface mining, the productivity of the shovel--dumper system depends on proper matching between the loading equipment and the haulage equipment.

Step 2: Identify the governing factors. The optimum dumper size is selected considering \[ \boxed{ \text{the haul distance and the size (capacity) of the shovel}. } \] These factors ensure maximum productivity and minimum waiting time. Hence, \[ \boxed{(C)} \] is the correct answer.