Aromatase inhibitor. Aromatase inhibitors (AIs) are a class of drugs used in the treatment of breast cancer in postmenopausal women and gynecomastia in men. They may also be used off-label to reduce increase of estrogen conversion during cycle with external testosterone. They may also be used for chemoprevention in high risk women.
Supporters of the Keystone XL Pipeline herald it as a job-creating machine, producing as many as 119,000 jobs. But only 3,900 workers will actually be required to build the pipeline to carry oil from Canada to the Gulf of Mexico, according to the U.S. State Department, and those jobs will only last for a year. There will be 35 permanent positions created.
Crude Oil vs. Natural Gas. The natural gas pipeline industry employed 27,240 people at an average salary of $66,580 for all occupations, according to the bureau. In comparison, the crude oil pipeline industry employed 8,930 people, but at a slightly higher average of $67,790. As might be expected, gas plant operators made up the largest single job in the natural gas pipeline sector, with 3,150 workers averaging $58,000.