Ключевые слова: 13020024, 3035 years, 3540 years, 4045 years, blue collar worker, checking, clipboard, concentration, counting, facial expression, halflength, hispanics, indoors, industry, inventory, labourer, midadult, midadult man, occupations and work, one person only, people, short sleeved, side view, standing, storage facility, warehouse, warehouse worker, warehousing, working, writing activity,