Question

The primary purpose of cut holes for blasting in an underground drivage is to
(A) provide additional free face
(B) have smooth surface after blasting
(C) prevent over-breakage
(D) reduce noise

Answer 1

Have smooth surface after blasting
plzzzzzzzzzz marks in brainliest plzzzzzzzzzz

Answer 2

Answer: its for Providing free space

Explanation: cut holes are longer shot holes, fired first to create free space for Easers.

Easers are shot holes placed around the drifts of cut holes.

Trimmers are shot holes placed around easers to give the final shape of drift.