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13: Petroleum and Chemical Engineer
Median Salary: $104,998
Salary Growth (2009–2015): +16%
Total Employees: 10,200
Change in Employees (2009–2015): -22%
The central responsibility of a petroleum engineer is to conduct studies specifically for the exploration, development and extraction of oil and gas deposits. They are employed by energy companies, government, research institutions and consulting companies. The broader chemical engineering field deals with the biochemical processes that are used to transform any raw material into a product: they could be stationed in the oil sands or they could find work in consumer-facing industries, like food.