The SPDR S&P Oil & Gas Equipment & Services ETF tracks an equal - weighted index of companies in the oil and gas equipment and services sub industry of the S&P Total Markets Index. (etf.com)
Construction laborers can also specialize by industry, for example your resume may be targeted by sub industry like «steel construction worker», or «electrical construction worker». (copymyresume.com)
The real issue here is not the registrants but the unintended consequence of the industry stacking dues paying realtors to the rafters for which an entire sub industry is now dependant. (remonline.com)