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.
COO, the Chief Operating Officer, delegates day to day operations and reports to the CEO, who is usually too busy to review production quotas and operations daily. They held a Masters in Healthcare Administration, Business Administration or Nursing from an accredited university.