36 CFR §1254.46

1. (a)Part 1280 specifies conduct rules for all NARA facilities. You must also obey any additional rules supplementing Subpart B of part 1254 that are posted or distributed by the facility director.
2. (b)You may not eat, drink, chew gum, smoke, or use smokeless tobacco products, or use a cell phone, pager, or similar communications device that emits sound signals in a research room. Communications devices must be in vibrate mode. You must make and receive telephone calls outside of research rooms.
3. (c)We prohibit loud talking and other activities likely to disturb other researchers.