Choose commodities recovered by the borehole mining method. (Choose all that apply.)

An important use of the long-term plan is to:

Haulback is the most important type of which mining method?

The blasting of drift rounds is more challenging than blasting benches for one main reason. What is the reason? 

What happens when the oxygen balance is too high?

What’s the idea behind the sequencing of stoping holes?

What happens when the oxygen balance is too low?

What are some things that drillers must do properly to ensure a successful blast outcome? (Check all that apply)

Choose the common causes for why oxygen balance is lost (choose all that apply):

What are the three common components to industrial explosives? (Choose all that apply.)