APFIVE Cost Factors in Subsurface Mining
Why is subsurface mining more expensive than surface mining?
A
Needs fewer safety measures
B
Requires more labor and equipment
C
Produces more coal per hour
D
Involves less environmental regulation
Question Leaderboard
| Rank | |||||
|---|---|---|---|---|---|
| #1 | elyfeng532 | 2 | 2 | 1m 31s | 109 |
| #2 | rehhan.623.2027 | 1 | 1 | 0m 14s | 86 |
| #3 | pal.newburgh31 | 1 | 1 | 0m 23s | 77 |
Items per page:
10
1 – 3 of 3