Engineering is the discipline and profession that applies scientific theories, mathematical methods, and empirical evidence to design, create, and analyze technological solutions cognizant of safety, human factors, physical laws, regulations, practicality, and cost. In the contemporary era, engineering is generally considered to consist of the major primary branches of chemical engineering, civil engineering, electrical engineering, and mechanical engineering.  There are numerous other engineering subdisciplines and interdisciplinary subjects that may or may not be part of these major engineering branches.
With the process of mineral extraction, some amount of waste material and other byproducts are generated which are the primary source of pollution in the vicinity of mines. Mining activities by their nature cause a disturbance of the natural environment in and around which the minerals are located. Mining engineers must, therefore, be concerned not only with the production and processing of mineral commodities but also with the mitigation of damage to the environment both during and after mining as a result of the change in the mining area.
Chemical engineering involved in the research, design, improvement, operation, and commercialization of plants, processes, and products for the chemical industry and related fields, such as biotechnology, energy, and materials.
Naval architectural engineering concerned with the design and production of marine vessels and structures, such as ships, barges, boats, drill rigs, and submarines. The naval architect creates the initial overall concept for a new marine vehicle, integrates the work of other specialists.
Here is a summary of the main branches of engineering:
Engineers apply scientific principles to design or develop structures, equipment, or processes. Engineering encompasses several disciplines. Traditionally, the main branches of engineering are chemical engineering, civil engineering, electrical engineering, and mechanical engineering, but there are many other areas of specialization.
Biochemical Engineering What is it about.
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Software engineering is a relatively new discipline and is an outgrowth of computer systems engineering and computer science. It involves the application of a systematic, disciplined and quantifiable approach to the development, operation and maintenance of software. It draws on the experience of other fields of engineering to build quality and reliability into increasingly large and complex software systems used to operate and control many aspects of our daily lives. Software engineers are increasingly being sought by both private and government sector employers involved with the development and ongoing implementation of major software tasks.
Materials engineering deals with the manufacture, structure, properties and uses of metals and non-metallic substances such as polymers, ceramics and composites. Since engineering converts raw materials into useful products, metallurgical and materials engineers may work in diverse areas, particularly those where chemical, electrical, manufacturing and mining engineers find employment. These include large foundries, steelworks, aluminium plants and companies involved with alloy research.