# howcomtech There have been eight coinage mints in operation at various times in the United States. [zooqle](https://www.howcomtech.com/zooqle/) Of these, only four were active in the late 20th century. The mint in Philadelphia also produces general coinage. The mint in San Francisco, Calif. is now used primarily for gold minting. These mints are under the direction of the which is a branch of the Department of the Treasury.Countries in which the demand for coins is not sufficient to make a national mint economically feasible have their coins struck in foreign mints. The British mint has struck coins for other countries since the 16th century. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://rudhs-organization.gitbook.io/howcomtech/howcomtech.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.