This minor group comprises supervisors, processing and manufacturing occupations, including supervisors, mineral and metal processing; supervisors, petroleum, gas and chemical processing and utilities; supervisors, food and beverage processing; supervisors, plastic and rubber products manufacturing; supervisors, forest products processing; and supervisors, textile, fabric, fur and leather products processing and manufacturing. They are employed by mineral ore and metal processing plants, cement processing plants, clay, glass and stone processing plants and foundries; petroleum and natural gas processing, pipeline and petrochemical companies, chemical and pharmaceutical companies, electric power utilities, and water and waste treatment utilities; fruit and vegetable processing plants, dairies, flour mills, bakeries, sugar refineries, fish plants, meat plants, breweries and other food, beverage and associated products processing establishments; rubber and plastic products manufacturing companies and in plastic parts divisions of other manufacturing companies; pulp and paper companies, paper converting companies, sawmills, planing mills, wood treatment plants, waferboard plants and other wood processing companies; and textile manufacturing companies, tanneries and other manufacturers of fabric, fur and leather products.