To dig clay, a spade is used with a short T handle and a small iron blade that is in the same plane as that handle. The stem length is adapted to the user; the length of the blade decreases as the digger digs out the clay deeper (from about 18 to about 12 cm).
The worker forcefully pushes the spade into the ground without using his foot. That is why he makes sure that the edge is always sharp and he regularly visits the blacksmith. [EMABB]