What is the most wanted mack dump truck model in Nigeria?

I know the R model is popular, but there are various class of the R model such as a the r686st and r600, etc

Which ones are prefered, what about the DM?

How do you determine a 30 ton truck (from Nigeria standard)

knowing that some double axile can carry more weight than the tri axile

How much are people willing to pay for them? gave eg

What is the average cost of clearing a dump truck in Nigeria?

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