Computer · Tunnel Engineering
Which of the following is NOT a primary engineering method used to suppress or control dust at its source during tunnel construction?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Use of vacuum hoods
- 2Wet drilling techniques
- 3Water spraying at the face
- 4Use of personal protective face masks✓
Correct answer
Use of personal protective face masks
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