The Big Wheelbarrow

The material is the point. Building a wheelbarrow out of mining-equipment components in Port Hedland is using the district's actual industry as the medium, and the contrast is the joke: the humblest possible earth-moving device, assembled from parts of the largest ones on the continent.

Port Hedland moves more tonnage than any other port in Australia, and the machinery involved – haul trucks with wheels taller than a person, shovels, draglines, ship loaders – operates at a scale that is genuinely difficult to comprehend. A wheelbarrow made from its offcuts is a good way of pointing at that.

Wedgefield is the town's light industrial area, which is exactly the right address. This is not a tourist object; it marks the entrance to the yards where the contractors, fabricators and suppliers work.

The stamp and coin recognition puts it alongside the Big Galah at Kimba, the Big Strawberry at Koonoomoo and Canberra's Big Swoop in the Mint's Aussie Big Things series.

Nothing is recorded of any figures for its size.