Someone who occupies a key role in the design, construction, and management of chemical operations to insure and improve the quality of life for people in and outside the plant is a(n)
chemical technician
information chemist
safety engineer
environmental chemist

environmental chemist

Explanation:

An environmnetal chemist is a professional who takes interest in the industrial activities and suggests preventive measures so as to produce least amount of wastes so that minimal or no loss of the environment outside the industry takes place. Such a professional will participate in all steps of chemical operations such as designing, construction and management.

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