Given the rationale, provide a reasonable question and answer. Step-by-step reasoning process: Dynamite is used in minig operation to dig deeper and quickly. Fuses need to work properly to blow the dynamite rightly. Dynamite is economical if go right.
 The question and answer:
The dynamite expert was checking all the fuses, if everything went right it would be a profitable day at the what?
Options:
- workplace
- box
- mining operation
- construction site
- coal mine
The answer is mining operation