Wheelbarrows -- shallow, open boxes for moving small loads -- have been used for thousands of years. Wheelbarrows are defined by the tripod on which they sit, the point of which is a single wheel.

The tires on most wheelbarrows are designed not to go flat even if pierced with a nail.

When loading a wheelbarrow, distribute the material as close to the wheel as possible. Keeping most of the weight close to the ground helps prevent straining your back.

The large-capacity wheelbarrow is often used on farms for transporting fertilizer or manure.