A tamping device (10) for plugging an open end of a blasting hole used in
a mine blasting application comprising an expandable sleeve (20) having a
bore. The sleeve is configurable between circumferentially expanded and
circumferentially retracted positions. An actuation member (40) having a
head section (41) is at least partially locatable inside the expandable
sleeve. The head section and the expandable sleeve are adapted in order
for relative longitudinal movement between the head section and the
expandable sleeve, to cause the sleeve to be manipulated from the
retracted position to the expanded position.