# Boilers and Their Operation

Department of the Navy Reid H. Ray Film Industries, Inc. Boilers and Their Operation AVA12760VNB1 - MN 9223f 1956 How Fuel Oil Burners Work. Features Patriotic Music.

- Kind: Educational
- Year: 1956
- By: U.S. Navy
- Genres: Education
- Archive: [Internet Archive](https://archive.org/details/gov.ntis.ava12760vnb1)
- Licence or status: [Public domain (Creative Commons dedication)](http://creativecommons.org/licenses/publicdomain/) (as the archive states it)
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

Not offered: its uploader marks it public domain, and the US Copyright Office's records do not settle that it is (a record that may be another film's, a film first published abroad, a year when renewal was automatic, or a country they do not name). Unclear is not offered.