IE was repairing bad splice on shuttle car in #5 entry. EE left for 10-15 min, returned & began working on splice. EE had not seen scoop in the area. With cap light & blinking light on, EE was on knees looking down. Scoop carrying supplies in elevated bucket was heading inby in #5 entry at walking speed. Scoop operator rang bell before & while passing through the airlock curtain.