Does anyone have any info on the US submunitions known as "button bombs"? These were an off-shoot of the gravel mine submunition program during the Vietnam War. Varying in size they were typically the size of a US quarter, and about 5mm thick, made of thin, stiff plastic. They could come in several drab colors, OD, tan, etc. They were reportedly manufactured out of Cornhusker Ammunition Plant in Nebraska, like the gravel mines. Years ago I saw a Picatinny-type photo of an ID board, it was part of a display put on by C.S. frrom Rockville, MD. I approached him looking to purchase (if necessary) a copy of the photo, but he said that he had not time for this.
I have several variations of the munition, but after years of searching still no data. The museum at Picatinny had nothing (now closed). The museum at Aberdeen has nothing. Records from this timeframe in the National Archive remain classified. Anyone?