Types of engineers and industrial engineer's role

-Civil Engineers deals with the design and construction of roads, buildings, airports, tunnels, dams, bridges, and water supply and sewage systems.
-Chemical Engineers apply the principles of chemistry to solve problems involving the production or use of chemicals and biochemicals.
-Electrical Engineers deals with designing, developing, and testing the manufacture of electrical equipment.
-Mechanical Engineers research, design, develop, manufacture, and test tools, engines, machines, and other mechanical devices
-Aerospace engineers deal with all of the aspects of aircraft, spacecraft, and missiles
-Agricultural Engineering apply knowledge of engineering technology and science to agriculture and the efficient use of biological resources.
-Biomedical Engineers develop devices and procedures that solve medical and health-related problems by combining their knowledge of biology and medicine with engineering principles and practices.
-Computer Engineers deals with the, designing, developing, and testing computer software and hardware.
-Electronics Engineers except computer are responsible for a wide range of technologies, from portable music players to the global positioning system.
-Environmental Engineers develop solutions to environmental problems
-Materials Engineers are involved in the development, processing, and testing of the materials used to create a range of products, from computer chips and aircraft wings to golf clubs and snow skis.
-Mining and Geological Engineers find, extract, and prepare coal, metals, and minerals for use by manufacturing industries and utilities.
-Nuclear Engineers research and develop the processes, instruments, and systems used to derive benefits from nuclear energy and radiation.
-Petroleum Engineers search the world for reservoirs containing oil or natural gas.

-Industrial Engineers determine the most effective ways to use people, machines, materials, information, and energy to make a product or provide a service, and the most notable difference of industrial engineering from the others is that industrial engineers mostly deal with humans instead of technical devices. They also have learnt all of the basic engineering courses partly and they combine the disciplines of basic engineering with the social and management acknowledge in order to use them in approaching problems as a whole part.
references:
http://www.freeinfosociety.com/site.php?postnum=285
http://en.wikipedia.org/wiki/Engineering