Dig out trenches to a spade's depth, known as a 'spit', and about 30cm (12in) wide. Place the soil from the first trench on the ground in front and work backwards along the plot, turning the soil ...

In doing so, it enables the user to dig a trench in a neat and uniformed manner. As a result, it prevents the lawn from being torn up by standard heavy-powered equipment. It also saves time and effort ...

The trenches are designed to make it impossible for the militants to drive into the university Authorities in north-eastern Nigeria have begun digging a 27km (17 mile) trench around the University ...