ForumsMembersRecent PostsRegisterLogin ForumsHEALTH, SAFETY AND ...Safety in DrillingSafety in drilling Notifications Clear all Safety in drilling Last Post RSS Ankit bhargav(@ankit-bhargav)New Member Joined: 2 years agoPosts: 2 Topic starter 12/08/2020 4:22 pm Process of enlarging only a small part of hole is known as QuotePlease Login or Register to reply to this topic. Share: