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.
Requirements and Responsibilities For Chief Operating Officer. Plans and directs all aspects of an organization's operational policies, objectives, initiatives. Responsible for the attainment of short- and long-term financial and operational goals. Directs the development of the organization to ensure future growth.
1 Chief operating officer, also called the chief operations officer, director of operations, or operations director.  Director of operations, a position responsible for controlling a large part of the operations of a company, subordinate to the chief operating officer (mainly found in complex or growing organizations).