Job Description:

• 1) Operates mobile drilling machine to drill blastholes horizontally in underground mine or in face of strip mine: Drives machine into room where coal, salt, or ore has been undercut.

• 2) Measures undercuttings with steel rod to determine depth of undercut and location of holes to be drilled.

• 3) Marks hole locations and boundaries of cut on ribs and face, using chalk.

• 4) Moves controls to position drill.

• 5) Starts drill and advances it into rib or face to specified depth.

• 6) Repositions machine to drill additional holes in specified pattern.

• 7) Observes electric power cable when moving machine to avoid damage to cable.

• 8) May drill blastholes in roof to prepare for blasting.