2. Persons working directly with and handling raw materials or dairy products shall maintain the highest standards of personal cleanliness at all times. In particular they shall—
(a)wear suitable, clean working clothes and headgear which completely encloses their hair;
(b)not smoke, spit, eat or drink in rooms where raw materials and dairy products are handled or stored;
(c)wash their hands at least each time work is resumed and whenever contamination of their hands has occurred; and
(d)cover wounds to the skin with a suitable waterproof dressing.