Q298
Match the following: Mining system Face supports a. Mechanized longwall in flat seam 1. Cable bolting b. Blasting gallery method 2. Shield support c. Mechanized longwall in steep seam 3. Alpine breaker line support d. Wangawilli method for 3 m thick coalseam 4. Troika shield support
Match the following:
| Mining system | Face supports |
| a. Mechanized longwall in flat seam | 1. Cable bolting |
| b. Blasting gallery method | 2. Shield support |
| c. Mechanized longwall in steep seam | 3. Alpine breaker line support |
| d. Wangawilli method for 3 m thick coalseam | 4. Troika shield support |
A.
a-2, b-1, c-4, d-3
AnswerB.
a-4, b-1, c-3, d-2
C.
a-4, b-2, c-3, d-1
D.
a-2, b-3, c-4, d-1
Answer: Option A
Solution
Answer: Option A
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