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Where is it easiest to open: Pipeline Transportation of Crude Oil
18 states, side by side. Operator counts and wages from Census and BLS; licence records matched on “SOC 17-2171” (soc) for Petroleum Engineers. A blank gate means NO RECORD MATCHED, which is not the same as no licence.
| State | Operators | Avg staff | Pay / employee | Gate | Licence titles matched |
|---|---|---|---|---|---|
| TX | 131 | 29.7 | $149,191 | licence | ENGINEER, PROFESSIONAL; PODIATRIST |
| LA | 27 | 9.7 | $174,874 | exam | Engineer, Professional |
| OK | 22 | 28.3 | $115,109 | licence | Engineer Intern |
| IL | 17 | 9.9 | $200,036 | licence | ENGINEER, INTERN; ENGINEER, PROFESSIONAL |
| ND | 17 | 12.4 | $162,386 | exam | Engineers |
| WY | 16 | 13.9 | $134,874 | exam | ENGINEER |
| CA | 15 | 18.5 | $171,162 | licence | Engineer In Training (E.I.T.); General Engineering Contractor |
| CO | 11 | 17.5 | $206,311 | exam | Engineer Intern; Professional Engineer |
| IN | 10 | 13.9 | $129,583 | exam | Engineer Intern; Professional Engineer |
| NM | 9 | 10.9 | $140,673 | exam | Engineering Intern Certification; Professional Engineers |
| PA | 8 | 10.2 | $146,695 | exam | Professional Engineer |
| NY | 7 | 4.4 | $177,710 | exam | Professional Engineer |
| AK | 4 | 29.0 | $190,138 | licence | Engineer- Chemical, Civil, Electrical, |
| MT | 3 | 7.0 | $85,857 | licence | Prof Eng Prof Land Surveyors - Enginee; Prof Eng Prof Land Surveyors - Enginee |
| KS | 3 | 3.7 | $552,273 | exam | Professional Engineer |
| MN | 3 | 7.7 | $156,130 | licence | Engineer-In-Training; Professional Engineer |
| AL | 3 | 4.3 | $172,846 | exam | Licensed Professional Engineer |
| OH | 3 | 295.3 | $191,409 | licence | Professional Engineer; Professional Engineers and Surveyors |
Axes are shown side by side and deliberately NOT collapsed into a ranking. A composite would be a score with no measured interval, and an unmeasured score is the thing this product exists to argue against. A high licence gate is a cost to enter and a moat once cleared — which of those matters more is the operator's call, not ours.
Licence data courtesy of CareerOneStop, sponsored by the U.S. Department of Labor. Free to read, no account, always — a condition of the data licence as well as our own position.