Discussion
Forepoling is used in weak ground to
Answer: C
Correct answer: support the ground ahead of the face before excavating it
Forepoles are bars or tubes driven forward over the crown at a shallow angle, forming an umbrella that carries the ground ahead while the next round is excavated beneath them. They are used where the stand-up time is too short to open the face safely, and they are the standard treatment for running ground.
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