Collect, identify, classify, and analyze physical evidence related to criminal investigations. They perform tests on weapons or substances, such as fiber, hair, and tissue. They testify as expert witnesses on evidence or crime laboratory techniques. They serve as specialists in area of expertise, such as ballistics, fingerprinting, handwriting, or biochemistry.
Perform laboratory and field tests to monitor the environment and investigate sources of pollution, including those that affect health, under the direction of an environmental scientist, engineer, or other specialist. They collect samples of gases, soil, water, and other materials for testing.
Compile data from various sources, such as maps, reports, and field and file investigations, for use by city planner in making planning studies.
Assist social scientists in laboratory, survey, and other social science research. They help prepare findings for publication and assist in laboratory analysis, quality control, or data management.
Test or analyze geological samples, crude oil, or minerals to detect presence of petroleum, gas, or mineral deposits indicating potential for exploration or production or to determine physical or chemical properties to ensure that products meet quality standards.
Conduct chemical and physical laboratory tests to assist scientists in making qualitative and quantitative analyses of solids, liquids, and gaseous materials for research and development of new products or processes, quality control, maintenance of environmental standards, and other work involving experimental, theoretical, or practical application.
Assist biological and medical scientists in laboratories. They set up, operate, and maintain laboratory instruments and equipment, monitor experiments, make observations, and calculate and record results. They analyze organic substances, such as blood, food, and drugs.
Perform standardized qualitative and quantitative tests to determine physical or chemical properties of food or beverage products.
Set up or maintain laboratory equipment and collect samples from crops or animals. They prepare specimens or record data to assist scientists in biology or related life science experiments.
Prepare studies for proposed transportation projects. They gather, compile, and analyze data. They study the use and operation of transportation systems. They develop transportation models or simulations.
