In summary, stainless steel does not rust because it is sufficiently reactive to protect itself from further attack by forming a passive corrosion product layer. (Other important metals such as titanium and aluminum also rely on passive film formation for their corrosion resistance.)
White Collar. White-collar workers usually perform job duties in an office setting. They are highly skilled and formally trained professionals. Many white-collar workers, such as accountants, bankers, attorneys and real estate agents, provide professional services to clients.
Blue collar jobs are any type of employment situations that involve manual labor that is compensated with an hourly wage rather than a salary. There are a number of different types of jobs that fall into this category, many of which provide a steady and attractive amount of income. Some of the more common examples of blue collar jobs are found in construction, mechanical repairs, plumbing, and electrical work. When many people think of blue collar jobs, the image of a worker in a manufacturing plant often comes to mind.