The amount of lead in the blood and tissues, as well as the time course of exposure, determine toxicity. Lead poisoning may be acute (from intense exposure of short duration) or chronic (from repeat low-level exposure over a prolonged period), but the latter is much more common.
The COO is responsible for the daily operation of the company, and routinely reports to the highest ranking executive, usually the chief executive officer (CEO). The COO is usually the second in command at the firm, especially if the highest ranking executive is the Chairman and CEO.
Jupiterimages/Creatas/Getty Images. The chief operating officer of a company, or COO, is a member of a high-level group of executives known as the C-suite..C-suite executives include the chief executive officer -- also known as the CEO -- and the chief financial officer, known as the CFO.ecessity of COOs. Not every company has a chief operating officer -- the position may not be necessary, depending on a company's structure. Some companies have a COO who also serves as chairman who heads the board of directors in establishing a company's mission and goals.