29 (tie). Service unit operator (oil, gas, and mining)

Service unit operators operate equipment to increase oil flow from producing wells or to remove stuck pipe, casing, tools, or other obstructions from drilling wells and other mining operations.

Median annual salary: $48,610

Overall unhealthiness score: 53.7

Top three health risks:

1. Exposure to contaminants: 94

2. Exposure to hazardous conditions: 89

3. Risk of minor burns, cuts, stings, and bites: 77