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.
However, the employer, or the chief executive, in any particular business usually determines the extent of the operations chief's oversight, no matter what title a company applies to the role. Larger companies usually refer to a director of operations as a COO. In either case, the job is usually an executive position, but the duties for the job vary widely. Such a position may be created, or eliminated, to fit the needs of a company as it grows or downsizes.