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US domestic supply

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Existing U.S. Product and Process<br />

Demand (cont’d)<br />

• Button Cell Batteries<br />

– 2004: 2.6 metric tons<br />

– 2001: 3.0 metric tons<br />

– Mercury consumption in batteries down from 1,000 metric tons in<br />

early 1980s due to federal laws.<br />

– Button cell (including zinc air, silver oxide and alkaline<br />

manganese oxide) and mercuric oxide (only used in military and<br />

medical equipment) only remaining types.<br />

– Members of National Electrical Manufacturers Association<br />

(NEMA) plan to phase out mercury use in button-cell battery<br />

production by 2011.<br />

– Four states enacted legislation prohibiting the distribution of<br />

items containing mercury-added button cell batteries.<br />

11

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